The angle superiorly indicates that ebay stock is for a Regular frame (FW stocks would be straight), with several cracks. The seller did not post a view of the left side, which may be worse



As said, any used stock would need to be fit to the frame, and cracks in the head of the stock addressed - likely several hundred $s, esp. if the stock needs to be refinished after crack repair which usually requires stripping and de-oiling.

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