NOS Eta 2890 / 2892-2 Watch Part #410 – Winding Sprocket / Winding Pinion Corner Wheel

Hey watchmakers and hobbyists, here's a nice find for your parts bin.

It's a New Old Stock (NOS) part for Eta movements—specifically the 2890 and 2892-2 calibers.

This is part number 410, known as the winding sprocket, winding pinion, or corner wheel, depending on who you ask.

It's an original Eta component, new without tags (just the part, no original packaging).

If you're servicing a movement and find this wheel worn or damaged, this is the exact replacement you need.

Genuine Eta quality for a reliable repair.