Unknown Double Hung pins

A professional from Providence, RI says:
Enclosed are photos of a double hung pin set that rests in a plastic holster. Manufacturer is unknown. The pins are broken off and they do not look like they are handed. They are about 3 1/2" long plus the length of the pins. Can you recognize these or help
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Paul from SWISCO responded:

We believe you may be able to replace your existing pivot pin with 26-426 pivot pin with wings and nylon housing top sash. We also offer the lower sash pivot, the 26-425. Visit each part and see if these will work for your window. 

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