I Googled the word Tsuba and came across your web site. I have been collecting Japanese militaria (mostly weapons) for several decades. Over the years, I came across other related Japanese items, including the three Tsuba pictured below, all of which were bought at flea markets. I would appreciate any information the experts on this site can provide about these items. I should note that #s 1 and 2 are iron, and #3 looks like it is made of copper. Thank you in advance.
Sam