Hamilton Electric 505C Calendar PROTOTYPE Watch


Offered is this Super Rare Hamilton Electric PROTOTYPE 505C CALENDAR watch. Pictured in René Rondeau's book "The Watch Of The Future" on pages 91-92, it was the prototype of the 507 Prototype that was never released.

This 505C differed in that it did not have a separate quick set feature for the date. This example may have been one of the 505C's that was used to add that feature for the 507, because it does have a quick set feature like the 507. Neither the 505C or 507 ever went to production, and the 505C is much more rare than the 507.

This model runs and keeps excellent time, and all functions work properly.

The watch window moves and follows the date until it flips at midnight. It is interesting that with this feature, it can actually be told whether it is am or pm. For instance, since as pictured the 28th is on the lower portion of the window, you can surmise that it is 10:10 pm rather than am.

BRAND:  Hamilton Electric 505C Calendar Prototype


CASE:  Stainless Steel

CASE BACK:  Marked Hamilton, Stainless Steel, and inside marked Hamilton W. Co., Lancaster, PA, Stainless Steel, R034705, Star W.C. Co.

BAND/BRACELET:  Used Genuine Lizard Black Watch Strap with matching silver tone buckle

MOVEMENT:  505C electric, marked Hamilton 505, Pat., ADJ, USA 

SIZE:  35mm without crown | 39mm lug to lug

CROWN:  marked with the "H" logo  

CONDITION:  Excellent

     CRYSTAL:  Excellent, with no cracks 

     CASE:  Excellent, all steel

     DIAL:  Excellent, Original finish with date window at 4, marked Hamilton Electric

     HANDS:  All correct for this watch

     BAND:  Used, but all Hamilton

Guaranteed to arrive in perfect running order, or money back upon return, or return for any reason within 7 days for a full refund.  However, since many parts are not available for this watch, I cannot give it a six month guarantee on the movement. I am a NAWCC (National Association of Watch and Clock Collectors) member and stand behind what I sell.

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