If anyone is interested, I'm selling my #100 Armature chuck on eBay. Two came with my lathe, and I really have no need for them. If you're interested, here's the link.
http://www.ebay.com/itm/Jacobs-100-...6?pt=BI_Tool_Work_Holding&hash=item27be95350a
http://www.ebay.com/itm/Jacobs-100-...6?pt=BI_Tool_Work_Holding&hash=item27be95350a