A curious 4 digit (8147) apparently factory engraved or roll marked number also appears on the case back adding a bit of added mystery to this excellent example
This copy actually came straight from the author
BAND/BRACELET: Vintage Gently Used Leather Tan Strap with matching Silver Tone Buckle
with less common applied markers
with nice Patina
Hamilton Thinline 6504 Watch MOVEMENT_Quartz A curious 4 digit (8147)Offered is this FULLY SERVICED circa 1968 Hamilton Thinline 6504 watch that winds, sets, and runs great. The watch keeps excellent time. It has a very nice tonneau shape. BRAND: Hamilton GENDER: Mens CASE: Stainless Steel Back with 10K RGP Bezel CASE BACK: Marked 10K RGP Bezel, Stainless Steel Back, Hamilton, and inside marked Hamilton W. Co., Lancaster, PA., 10K. RGP Bezel, Stainless Steel Back, P220883, Star W. C. Co., 917668 BAND BRACELET: Brand