Waltham Factory Balance Staff for 6s Model 1890 No. 8142

Waltham Factory Balance Staff for 6s Model 1890 Movements, Factory No. 8142, Pivot 9, Refill #38, new in envelope. See images for further details.  I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.