The day difference time is about -13~-1 sec / day
The day difference time is about -67~-24 sec / day
6 turn of crown to unlock)The serial number engraving is clear
but it appears to be from a later period
Replacement Parts (Mainspring and Gaskets)Accuracy adjustment[Features]Ref:1600 / cal
c1963 Serviced Rolex Vintage DateJust 1601 Silver Dial 36mm cal.1560 #1532 The day difference time isCondition Rank : Very Good (Full serviced on Feb 1, 2026) [Description of services] Full disassembly, cleaning, inspection, lubrication, and assembly. [Originality Verified] The critical components (case & caseback, dial, and movement) are original, and the key components (crown, hands, and bezel) are original as well. The period correctness is also consistent. [Features] Ref: 1601 cal. 1560 (no hack) 18000bph 36mm case (excluding crown) 20mm lug