Hamilton 21/o Size Mainspring - Watch Part No. 7421 - MX1789
MX1789
For your consideration we have a "new old stock" Hamilton 21/o size mainspring, part number 2921, 17 Jewel, 1D x 7-1/2 / 100 M. M.
Good for the professional, beginner, or hobbyist!
Please refer to pictures for more information. We try very hard to provide you with good images to enable you to make an informed buying decision. This watch has not been serviced and is sold as is.
Note that we try winding the movements and then state our observations as we write the ads. We are not able to comment on how long each movement is actually running, nor can we always diagnose all the shortcomings of a movement should it not run. We try our best to give you accurate and honest information about the condition and potential of each item!
