Hamilton 688 / Calibre 61 Nos Movement

Details:

NOS Hamilton 688 / calibre 61 movement. This number 688 is a Hamilton reference and the movement is Calibre 61. Never install to a watch. In working condition. Have the movement check and oiled before installation. NOS movement has been in storage for many years. The Hamilton reference number- 688/Calibre 61 is based on ETA 2391. Hamilton calibre S75S also an ETA 2391 modified with hacking feature. Therefore both Calibre 61 and 75 is the same calibre without hacking feature. ETA 2391 was used by...