Antique porcelain collectors: how could it appear that two sellers are selling the exact same piece?

I just lost an eBay auction for a piece that looks exactly like this:
[ Limoges violets ]

Oddly, the marks on the back look just alike too:
[ plate 1 ] [ plate 2 ]

Could two pieces that were hand-painted really look as much alike as this? including the exact degree of definition of the T & V stamp and the signature of the artist?

If these are in fact the selfsame article, how could it be offered in one place when it has just sold (at a higher price) in another?

Is there something more I should know about (a) Limoges china, (b) online selling, and/or (c) eBay auctions? I’m a relative novice at all three.