Gallet age determination by year of manufacture chronographs

The following Gallet chronographs with an indication of the year of manufacture allow at least a rough age estimate:

1940 Chronograph Venus caliber, hand-wound, stainless steel, 2 sub-dials

1940 Chronograph Universal Geneve Cal. 281, 17 jewels stainless steel, 3 sub-dials

1942 Chronograph Venus Caliber 140, 14 jewels, hand-wound, stainless steel

1944 Chronograph Excelsior Park Cal. 42, hand-wound, stainless steel

1945 Chronograph Excelsior Park Cal. 4, 17 jewels, hand-wound, 14K gold

1945 Chronograph Excelsior Park Cal. 42, hand-wound, stainless steel

1948 Chronograph, 17 jewels, hand-wound, 14k gold, 2 sub-dials

1948 Excelsior Park Caliber 4, 17 jewels, stainless steel

1948 Chronograph Suisse Ebel Caliber 17 Jewels, Hand-Wound, Stainless Steel

1950 Decimal Chronograph Lemania caliber, 17 jewels, hand-wound, 14k gold

1950 Chronograph Valjoux Cal. 72, full calendar, manual winding, 14K gold, 3 sub-dials

1954 Chronograph venus Cal 188, brass case, hand-wound, 2 sub-dials

1955 - Chronograph Valjoux Cal. 70C, hand-wound, full calendar, 14K gold

1955 Chronograoh Yachting, Excelsior Park caliber, sailing sports watch

1958 Valjoux Cal 723, 14K Gold, full calendar

1958 Chronograph Landeron Caliber 149, 17 jewels, hand-wound, stainless steel

1960 Decimal Chronograph Lemania caliber, 17 jewels, hand-wound, 14k gold

1960 Chronograph Valjoux Cal. 7730, hand-wound, stainless steel

1960 Chronograph Valjoux Cal. 72, stainless steel, hand-wound

1962 Chronograph Landeron Cal. 149, hand-wound stainless steel

1963 Chronograph Valjoux Cal. 7730, 24h display, chrome-plated metal

1964 Chronograph Excelsior Park Cal. 40/68, 14K gold, hand-wound, 17 jewels

1965 Valjoux Cal. 72, hand-wound, stainless steel

1965 Gallet by Racine, Excelsior Park Cal. 4, hand-wound, gold-plated metal, 3 sub-dials

1966 Chronograph Valjoux Cal. 7733, hand-wound, stainless steel

1966 Chronograph Landeron Kal 149, world time display, stainless steel, hand-wound

1967 Chronograph Decimal, Valjoux Cal. 7730, stainless steel, railway minute track

1968 Exel-O-Graph, Excelsior Park Cal. 40 - 68, hand-wound, stainless steel

1970 Flying Officer Chronograph, Poljot Cal. 3133, 23 jewels, gold-plated bezel

1976 Chronograph Landeron Cal 4-68, hand-wound, rotating bezel, stainless steel

1978 Chronograph Valjoux Cal. 7750, Date, Automatic, Day Date, 3 sub-dials

Source: Wolfgang Salm "Wristwatches"