Waltham Factory 16s Model 1899/1908 Barrel Arbor No. 4751

Waltham 16s Model 1899 & 1908 Factory Barrel Arbor, Factory No. 4751, NOS, unused. This is from an original Waltham factory parts system and is virtually pristine. So it is not used and not an aftermarket stem, but a true original factory part. See the last image for specifics regarding the proper application of this part. I specialize in hard to find watch parts so I usually have whatever you might need and inquiries are always welcome. Images do an adequate job of representing the item.