Omega 1506 Bracelet Restoration Question - End Piece

I recently acquired a 1506/16 bracelet for my Speedy 105.012-65. It doesn't come with the #16 end links (they never do hehe), but it also has the 'end piece' tab missing on one side of the bracelet - see attached pic in red for what I am referring to, and note it missing on the other side. I am having a hell of a time figuring out what exactly this piece is referred to as and whether there are any options for how I can source this piece specifically ex Otto Frei? A current non-OEM option, etc. Any advice?

your best bet is to hunt for a partial 1039 on ebay. I think each side should have 8 folded links.

Really appreciate the info, thank you all!