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Thanks for visiting my vintage Hamilton watch blog. I like to restore US-made Hamilton wrist watches back to their original glory and share my experiences with other enthusiasts. Use the "Search" space below if you know what model you're looking for. Feel free to leave polite comments or questions in the spaces provided. Also check out my "watches for sale" on my Etsy site - the link is on the right, just below.

Sunday, June 9, 2013

1955 Automatic K-402

Hamilton introduced it's first automatics in 1954 with 12 different models.  Models were named Automatic K-something with the "something" being a number.  Numbers with a 1XX had 18K solid gold cases, 2XX had 14K solid gold cases, 3XX had 10K solid cases, 4XX had gold filled cases and 5XX were stainless steel.

So it makes sense that the Automatic K-402 was an early watch in a gold filled case.  It was introduced in 1955 and produced for three years.

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As you can see in the catalog ad, the K-402 came with a choice of black or white dials.

Behind the dial you'll find Hamilton's 17 jewel 661movement.  All Hamilton automatics were made by various Swiss manufacturers.  The 661 was made by Certina Kurth Freres and is a caliber 28.45.  The little toggle-switch looking thing on the rotor is actually used to remove the rotor.  Flip it to the left and the rotor will come off (once you rotate it to the right position).

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On the wrist, the K-402 is a sharp looking watch, both figuratively speaking as well as looking at the stepped case with sharply angled lugs, hour markers and dauphine-style hands.

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