Eterna Schild watches age determination up to 1974 plus list of all calibers

 

From 1899 onwards, the movement and case were always provided with consecutive serial numbers.

We start with number: 1,000,000.

Before 1900, watches bearing six-digit serial numbers were predominantly delivered to jewelers, who also determined the printing on the dials. These watches bear the trademark "IXL" on the inside covers – a reference to the manufacturer "Schild Fréres & Co." This is not immediately recognizable to everyone.

Production figures have fluctuated considerably over the years, so these figures are only approximate.

+ - 200 000

The movement numbers on the right are well-known Eterna watches with private date engraving
          

          

1894 630 000 626 752 IXL

1900 1,045,000  
1901 1,090,000
1902 1,135,000
1903 1,180,000
1904 1,225,000
1905 1,270,000
1906 1,315,000
1907 1,360,000
1908 1,405,000
1909 1,450,000
1910 1,500,000 1,556,288
1911 1,550,000
1912 1,600,000
1913 1,650,000 1,663,980
1914 1,700,000
1915 1,750,000 1,914,868
1916 1,800,000
1917 1,850,000
1918 1,890,000
1919 1,930,000
1920 1,970,000
1921 2,010,000
1922 2,050,000
1923 2,090,000
1924 2,130,000
1925 2,170,000
1926 2,210,000
1927 2,250,000
1928 2,290,000
1929 2,330,000
1930 2,370,000
1931 2,410,000
1932 2,450,000
1933 2,500,000 2,451,950
1934 2,550,000
1935 2,600,000
1936 2,650,000
1937 2,700,000 2,740,007
1938 2,750,000
1939 2,800,000
1940 2,850,000
1941 2,900,000
1942 2,950,000
1943 3,000,000
1944 3,050,000
1945 3,100,000
1946 3,170,000
1947 3,240,000
1948 3,310,000
1949 3,380,000
1950 3,450,000
1951 3,520,000
1952 3,600,000
1953 3,700,000
1954 3,800,000
1955 3,900,000
1956 4,000,000
1957 4,100,000 4,059 XXX
1958 4,200,000
1959 4,300,000
1960 4,400,000
1961 4,500,000
1962 4,650,000
1963 4,800,000
1964 4,950,000
1965 5,100,000
1966 5,250,000
1967 5,400,000
1968 5,550,000
1969 5,700,000
1970 5,850,000 5,865 XXX
1971 6,000,000 5,909,304
1972 6,100,000
1973 6,200,000
1974 6,300,000

? 7,001,900

__________________________

The calibers

Eterna 51 crown winding 20''' alarm clock
Eterna 52 crown winding 18''' alarm clock

Eterna 53 crown winding 24''' alarm clock
Eterna 68 hand-wound 13''' alarm clock
Eterna 82 hand-wound 10''' alarm clock

Eterna 165 crown winding 19'''
Eterna 169 crown winding 19'''
Eterna 175 hand-wound 10.25'''
Eterna 235 crown winding 18''' alarm clock
Eterna 236 crown winding 18''' alarm clock

Eterna 301 crown winding 17'''
Eterna 301 new crown winding 17'''
Eterna 307 crown winding 17'''
Eterna 307 new crown winding 17'''
Eterna 321 crown winding 19'''

Eterna 345 hand-wound 6'''
Eterna 350 hand-wound 6.75x11'''
Eterna 360 hand-wound 8.75'''
Eterna 370 hand-wound 5.25'''
Eterna 387 hand-wound 9.75'''

Eterna 403 crown winding 18'''
Eterna 427 hand-wound 6.5'''
Eterna 431 crown winding 19'''
Eterna 433 crown winding 19'''
Eterna 435 crown winding 20'''
Eterna 467 crown winding 18'''
Eterna 485 crown winding 20'''

Eterna 520 hand-wound 12'''
Eterna 520H hand-wound 12'''
Eterna 520S hand-wound 12'''
Eterna 520SU hand-wound 12'''
Eterna 520U hand-wound 12'''

Eterna 600 hand-wound 10.5'''
Eterna 600S hand-wound 10.5'''
Eterna 610 hand-wound
Eterna 615 hand-wound 5.75 x 8.5'''
Eterna 616 hand-wound 5.75 x 8.5'''
Eterna 625 hand-wound 7.75'''
Eterna 629 hand-wound 9.75'''
Eterna 651 hand-wound

Eterna 675 hand-wound 8.75
Eterna 675S hand-wound 8.75

Eterna 702 Hand-Wound 10.5''' Chrono
Eterna 703 Hand-Wound 14''' Chrono
Eterna 704 Hand-Wound 14''' Chrono

Eterna 710 hand-wound 8.75x12 '''
Eterna 710S hand-wound 8.75x12 '''
Eterna 740 hand-wound 8.75x11 '''
Eterna 758 hand-wound 8.75x11 '''
Eterna 770 hand-wound 6.75x11 '''

Eterna 780 hand-wound 4'''
Eterna 781 hand-wound 4'''
Eterna 805 hand-wound 19'' alarm clock
Eterna 833 Automatic (Pendulum) 12'''
Eterna 834 Automatic (Pendulum) 12'''
Eterna 835 Automatic (Pendulum) 12'''
Eterna 835H Automatic (Pendulum) 12'''

Eterna 844 hand-wound 9.75'''
Eterna 845 hand-wound 9.75'''
Eterna 852 hand-wound 14'''
Eterna 852S hand-wound 14'''
Eterna 852SU hand-wound 14'''
Eterna 852U hand-wound 14'''
Eterna 860 hand-wound 8 x 9'''
Eterna 860S hand-wound 8 x 9'''

Eterna 880U hand-wound 5.75 x 6.75'''
Eterna 905E hand-wound 9.75'''
Eterna 905H hand-wound 9.75'''
Eterna 965 hand-wound 10.75'''
Eterna 965S hand-wound 10.75'''
Eterna 970 hand-wound 10.25'''
Eterna 970S hand-wound 10.25'''

Eterna 1005 hand-wound 8x9'''

Eterna 1020 hand-wound 11.5'''
Eterna 1020S hand-wound 11.5'''
Eterna 1025 hand-wound 8.75'''
Eterna 1025S hand-wound 8.75'''

Eterna 1031H hand-wound 7.75'''
Eterna 1033H Automatic (Pendulum) 9.75'''
Eterna 1034H Automatic (Pendulum) 9.75'''
Eterna 1050L hand-wound 5.75 x 7'''
Eterna 1057H hand-wound 5.75 x 8.5''
Eterna 1068 hand-wound 13'' hrono

Eterna 1076H Automatic (Pendulum) 13'''
Eterna 1077H Automatic (Pendulum) 13'''

Eterna 1078UC hand-wound 10.5'''
Eterna 1079UC hand-wound 11.5'''

Eterna 1116H hand-wound 12'''
Eterna 1116U hand-wound 12'''
Eterna 1117H hand-wound 13'''
Eterna 1117U hand-wound 13'''
Eterna 1118H hand-wound 12'''
Eterna 1118U hand-wound 12'''

Eterna 1136 hand-wound 12'''
Eterna 1137 hand-wound 13'''

Eterna 1158H Automatic (Pendulum) 12.25'''
Eterna 1159H Automatic (Pendulum) 13'''

Eterna 1187 hand-wound 5.75'''

Eterna 1194R Automatic 7.75'''
Eterna 1195R Automatic 8.25'''
Eterna 1198R Automatic 9.25'''
Eterna 1199R Automatic 10'''

Eterna 1200R hand-wound 7.75'''
Eterna 1125 hand-wound 8x9'''

Eterna 1237T Automatic 12.5'''
Eterna 1237UT Automatic 12.5'''
Eterna 1237UC Automatic 12.5'''
Eterna 1239T Automatic 13'''
Eterna 1239UT Automatic 13'''
Eterna 1239UC Automatic 13'''
Eterna 1243T Automatic 13'''
Eterna 1243UT Automatic 13'''
Eterna 1243TC Automatic 13'''
Eterna 1243UC Automatic 13'''
Eterna 1244T hand-wound 7 x 8'''
Eterna 1246T Automatic 13.5'''
Eterna 1246UT Automatic 13.5'''
Eterna 1246TC Automatic 13.5'''
Eterna 1246UC Automatic 13.5'''
Eterna 1247T Automatic 12.5'''
Eterna 1247UT Automatic 12.5'''
Eterna 1247TC Automatic 12.5'''
Eterna 1247UC Automatic 12.5'''
Eterna 1248T Automatic 11.5'''
Eterna 1248UT Automatic 11.5'''
Eterna 1248UC Automatic 11.5'''
Eterna 1249T Automatic 13'''
Eterna 1249UT Automatic 13'''
Eterna 1249UC Automatic 13'''
Eterna 1253UT Automatic 13'''
Eterna 1253UC Automatic 13'''
Eterna 1254T Automatic 13.5'''
Eterna 1254UT Automatic 13.5'''
Eterna 1254UC Automatic 13.5'''

Eterna 1274U hand-wound 10.5'''
Eterna 1275U hand-wound 11.5'''

Eterna 1319T Automatic 9.25'''
Eterna 1319U Automatic 9.25'''
Eterna 1321T Automatic 10.5'''
Eterna 1321U Automatic 10.5'''
Eterna 1323U Automatic 9.25'''
Eterna 1324U Automatic 10.5'''
Eterna 1401U Automatic 7.25'''
Eterna 1402U Automatic 7.75'''
Eterna 1402UW Automatic 7.75'''
Eterna 1403U Automatic 8.25'''

Eterna 1406G hand-wound 10.5'''
Eterna 1406U hand-wound 10.5'''
Eterna 1407G hand-wound 11.5'''
Eterna 1407U hand-wound 11.5'''
Eterna 1408U hand-wound 11.5'''
Eterna 1409U hand-wound 12.5'''
Eterna 1410U hand-wound 13'''

Eterna 1411U Automatic 11.5'''
Eterna 1411U new Automatic 11.5'''
Eterna 1411UD Automatic 11.5'''
Eterna 1412U Automatic 12.5'''
Eterna 1412U new Automatic 12.5'''
Eterna 1412UD Automatic 12.5'''
Eterna 1413U Automatic 12.5'''
Eterna 1413U new Automatic 12.5'''
Eterna 1413UD Automatic 12.5'''
Eterna 1414U Automatic 13'''
Eterna 1414U new Automatic 13'''
Eterna 1414UD Automatic 13'''
Eterna 1415U Automatic 13'''
Eterna 1415U new Automatic 13'''
Eterna 1415UD Automatic 13'''
Eterna 1416U Automatic 13.5'''
Eterna 1416U new Automatic 13.5'''
Eterna 1416UD Automatic 13.5'''
Eterna 1417U hand-wound 6'''
Eterna 1418U hand-wound 6.75'''
Eterna 1419U Automatic 6.75'''
Eterna 1420U Automatic 7.25'''
Eterna 1421U Automatic 11.5'''
Eterna 1421U new Automatic 11.5'''
Eterna 1421UD Automatic 11.5'''
Eterna 1422U Automatic 12.5'''
Eterna 1422U new Automatic 12.5'''
Eterna 1422UD Automatic 12.5'''
Eterna 1423U Automatic 12.5'''
Eterna 1423U new Automatic 12.5'''
Eterna 1423UD Automatic 12.5'''
Eterna 1424U Automatic 13'''
Eterna 1424U new Automatic 13'''
Eterna 1424UD Automatic 13'''
Eterna 1425U Automatic 13'''
Eterna 1425U new Automatic 13'''
Eterna 1425UD Automatic 13'''
Eterna 1426U Automatic 13.5'''
Eterna 1426U new Automatic 13.5'''
Eterna 1426UD Automatic 13.5'''
Eterna 1427U Automatic 11.5'''
Eterna 1428U Automatic 12.5'''
Eterna 1429U Automatic 13'''
Eterna 1429UB Automatic 13'''

Eterna 1435K hand-wound 7.75'''
Eterna 1437U hand-wound 5.75 x 6.75''

Eterna 1438U Automatic 12.5'''
Eterna 1439U Automatic 13'''
Eterna 1441U Automatic 7.75'''
Eterna 1444U Automatic 8.25'''
Eterna 1445K Automatic 7.75'''
Eterna 1445U Automatic 7.75'''
Eterna 1446K Automatic 8.25'''
Eterna 1446U Automatic 8.25'''

Eterna 1447K hand-wound 5.75 x 6.75'''
Eterna 1447U hand-wound 5.75 x 6.75''
Eterna 1448U hand-wound 11.5'''
Eterna 1448UX hand-wound 11.5'''
Eterna 1449U hand-wound 12.5'''
Eterna 1450U hand-wound 13'''

Eterna 1453U Automatic 13.5'''
Eterna 1455U Automatic 12.5'''
Eterna 1456U Automatic 13'''
Eterna 1457U Automatic 13'''
Eterna 1459K Automatic 7.75'''
Eterna 1459U Automatic 7.75'''
Eterna 1463K Automatic 6.75'''
Eterna 1465U Automatic 12.5'''
Eterna 1466U Automatic 13'''
Eterna 1469K Automatic 7.75'''
Eterna 1469U Automatic 7.75'''
Eterna 1470K Automatic 12.5'''
Eterna 1471K Automatic 13'''

Eterna 1475K hand-wound 12.5'''
Eterna 1476K hand-wound 13'''

Eterna 1478K Automatic 12.5'''
Eterna 1479K Automatic 13'''
Eterna 1480K Automatic 12.5'''
Eterna 1481K Automatic 13'''

Eterna 1485K hand-wound 12.5'''
Eterna 1486K hand-wound 13'''

Eterna 1488K Automatic 12.5'''
Eterna 1489K Automatic 13'''
Eterna 1497K Automatic 6.75'''
Eterna 1500K Automatic 13'''
Eterna 1500KB Automatic 13'''
Eterna 1501K Automatic 13'''
Eterna 1504K Automatic 13'''
Eterna 1504KB Automatic 13'''
Eterna 1511 Automatic 11.5''' 36000
Eterna 1512 Automatic 13''' 36000
Eterna 1521 Automatic 11.5''' 36000
Eterna 1522 Automatic 13''' 36000
Eterna 1523 Automatic 11.5''' 36000
Eterna 1524 Automatic 13''' 36000

Eterna 1531 Automatic 11.5''' 21600
Eterna 1532 Automatic 13''' 21600
Eterna 1541 Automatic 11.5''' 21600
Eterna 1542 Automatic 13''' 21600
Eterna 1543 Automatic 11.5''' 21600
Eterna 1544 Automatic 13''' 21600

Eterna 1550 (ETA-ESA 9162) tuning fork 13'''
Eterna 1551 (ETA-ESA 9164) tuning fork 13'''

Eterna 12660 hand-wound 7.75''' (ETA 2660)
Eterna 12660B hand-wound 7.75''' (ETA 2660)
Eterna 12661 hand-wound 7.75'' (ETA 2661)
Eterna 12668 hand-wound 7.75'' (ETA 2668)
Eterna 12670 Automatic 7.75''' (ETA 2670)
Eterna 12671 Automatic 7.75''' (ETA 2671)
Eterna 12671-1 Automatic 7.75'' (ETA 2671)
Eterna 12678 Automatic 7.75''' (ETA 2678)
Eterna 12801 hand-wound 11.5''' (ETA 2801)
Eterna 12824 Automatic 11.5''' (ETA 2824)
Eterna 12825 Automatic 13''' (ETA 2824)
Eterna 12836 Automatic 11.5''' (ETA 2836)
Eterna 12892 Automatic 12.5''' (ETA 2892)

Source: schild-eterna.de