I guess such things do not happen very often... Imagine - I buy a papered ko-kinko tsuba from one of the NMB members. Some time passes and... lo and behold! There is a nearly identical tsuba on eBay (yes, I confess, I visit that evil place in search of some underestimated kodogu). I buy it. After a week, I post my first tsuba in a thread concerning sanmai tsuba and their quality, and an NMB member points out that there is a third tsuba (nearly identical with mine) on Yahoo Japan auctions. I
