"K. Mikimoto" signed pieces

[TahitianDreamin]

Hi again!

I have come across a couple of these items that are signed "K. Mikimoto Tokyo" notably

http://www.shopgoodwill.com/viewItem.asp?ItemID=27432026

and

http://www.ebay.com/itm/Signed-K-Mi...513958?hash=item2811ee2e66:g:1RMAAOSwaA5WlTRE

I can't seem to find a comprehensive Mikimoto history site, do any of you folks know about the history of the "clamshell" marking, if it has always been used, if either of these are, ahem, "inspired" pieces and what approximate age items marked with the "K. Mikimoto" would be? I am especially curious about the goodwill one because the font seems like old-timey "oriental" throw-back style. Like way throwback. Like Chop Suey throwback.

Anyway, thanks and hope everyone on the east coast is staying warm!!!

 

[KAC]

I'm no expert on vintage jewelry, but the clam shell Mikimoto marking looks correct.

 

[pattye]

Both pieces seem authentic to me also, good values for a collector. Thanks for sharing.

 

[BWeaves]

They seem authentic to me, too, although I'm not an expert. At any rate, they're an excellent buy. I would have never thought of checking Goodwill for Mikimoto pearls.