c1954 Serviced Vintage ROLEX Oyster Speedking 6221 30mm cal.710 Boys Watch #1614

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

Condition Rank : Good  
(Full serviced on August 18, 2026)

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

[Originality Verified] - Mixed  
The Rolex Oyster Speedking retains its original-looking dial, movement and hands. The smooth bezel and later “-” crown appear to be replacements; Ref. 6221 is usually associated with an engine-turned bezel and earlier “+” crown.

[Features]  
Ref. 6221 / cal. 710 (non-hack) / 18,000 bph / 30mm case / 17mm lug  
Year of manufacture: c. 1954 / Serial No: 25xxx  
Non-waterproof.

[Collector’s Notes]  
This early Rolex Oyster Speedking has a beautiful honeycomb-textured dial with strong natural patina and a blued-steel seconds hand.  
The manually wound cal. 710 is part of the charm of these small 1950s Oyster Speedking watches.

[Dial] : Patina  
It appears original. No clear signs of redial, repainting, or relume.

[Hands] : Good  
They appear original, with no clear signs of replacement or relume.

[Crystal] : Good  
Plexiglass.

[Case, crown and back of the case] : Good  
Age-related wear is present. Crown screw-in is good (approx. 0.7 turns to unlock). Serial engraving is readable. Inside caseback shows 6220 crossed out and corrected to 6221.

[Band] : New  
New aftermarket leather strap, not Rolex.

[Action] : Good  
Hand-winding and time-setting work properly.

[Accuracy] : Fair  
Allow approximately -2 to +2 min/day in actual use due to positional variation. Timegrapher shown at +34 sec/day.