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1956 Hamilton Jason "B"

1956 Hamilton Jason "B"

Serviced July 2022, Swiss made manual wind movement, excellent black dial, hand polished stainless steel case, acrylic crystal, unworn leather strap, alloy mainspring.

Produced for a single year in 1956, the Hamilton Jason "B" comes with a Swiss (ETA) made manual wind 671 caliber movement. The black dial is excellent with little to no patina visible. The applied numeral 12, hour markers, and pearlized minute track are excellent. Hour dots have been relumed. The paint for the curved Hamilton branding is excellent. The original silver hands show some light patina and have also been relumed. The watch is ready to wear on an unworn black genuine leather two piece strap with contrasting stitching. The Swiss (ETA) made 17 jewel caliber 671 manual movement was fully serviced July 2022 and is running well and currently performing at +/- 16 seconds per day.


32.5mm wide (excluding the crown)
9.3mm Tall
17.5mm Lug to Lug
37.5mm Tip to Tip

Case - Hand polished stainless steel case and screw down case back. Some scratching on the bezel and on the case back.

Lugs - Lugs are in excellent condition with no major defects. Some light scratching.

Crystal - NOS domed acrylic crystal installed during service in July 2022.

Hands - Appear to be original with light patina. Hour and minute hands have been relumed

Dial - Excellent black dial. Applied silver tone 12, hour markers, and pearlized minute track. Painted Hamilton branding. Hour dots have been relumed.

Strap - Unworn black genuine leather two piece strap with stainless steel buckle.

Movement - Swiss (ETA) made Hamilton manual wind caliber 671, 17 jewels. Fully serviced July 2022. Runs strong and keeping excellent time.


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