It's interesting to note how prolific Hamilton's lineup became in the 30 years between 1930 and 1960. For example, in 1934 there were 20 men's models in the lineup and in 1964 there were over 130!
Of course, over those 30 years Hamilton introduced automatic movements, Electric movements, models cases in stainless steel, even a variety of entry-level moves with Swiss-made manual winding movements. In 1934 you had your choice of a 987F movement or a 979F, when it came to wrist watches.
Pocket watches were still very popular in the 1930s and there was a broad selection of calibers and models. Pocket watches were still available in the 1960s, including Railroad models.
Anyway, I recently received a very nice Hamilton Thin-o-matic in need of some TLC. It took me a while to figure out what model it was... either the T-203 or the T-209. I'll give you my rationale below but I'll let you make up your mind too.
The T-203 was introduced in 1962 and made for three years. It came in a solid 14K yellow gold case.
My project watch is pictured below. Identifying a watch model requires taking into consideration several attributes...
- What is the case material (gold filled, solid gold, stainless steel back, etc)
- What is the shape of the crystal / bezel opening (round, rectangular, etc)
- What are the markers on the dial (numbers, markers, etc.)
- What is the movement inside?