http://www.ebay.com/itm/1738-SPANIS...261281456997Well, I never said everything on the Bay is idiot-proof :->... Seller may or may not know better on this piece, but I'd say it's certainly a modern cast replica rather than shipwreck recovery. Most non-beginner collectors seeking out such material should be able to recognize the difference, I would think/hope... The one slightly tricky part of this is that 1738 is a date seen frequently on pillar 8R from several notable wrecks, so you could see someone outsmarting himself on a piece like this.
Now, to contrast:
http://www.ebay.com/itm/1738-Mo-MF-...200960416366