30mm Boys size Serviced Vintage Rolex Oyster Speedking 6430 cal.1225 c1970 #1497

30mm boy's size! Please read the description carefully!

Condition Rank : Very Good
(Full serviced on Sep 13, 2025)

[Description of services]
Full disassembly, cleaning, inspection, lubrication, and assembly.

[Features]
Ref:6430 / cal.1225  /21600bph / 30mm case (excluding crown) / 17mm lug / Boys size
Accuracy -12~0 sec/day
Year of manufacture : c1970
Non-WaterProof

It is not possible to describe all of the conditions in writing.Please check the photos carefully if you would like to know more about the condition.Also, if you have any questions, please ask.

[Dial] : Very Good

[Hands] : Very Good

[Crystal] : Very Good
Plexiglass

[Case, crown and back of the case] : Good
Crown screw-in is good. (1.1 turn of crown to unlock)
The serial number engraving is readable.

[Band] : New (Leather straps, not genuine)

[Action] : Very Good
It runs well by Hand-winding.
We've seen it run for long hours.
The winding of the crown is very good.

[Accuracy] : Very Good
The day difference time is about -12~0 sec / day.(Measured by Timegraphers)
The accuracy may vary depending on the posture.
This is a vintage watch, so do not expect the same accuracy as a quartz watch.
If you are looking for perfect accuracy, please do not buy.