Legit Check - Speedmaster components

Good day all. I recently obtained this Speedmaster. Up to this point I have primarily collected Seamaster divers, so the Speedmaster rabbit hole is uncharted territory for me. The Speedmaster I purchased was supposedly restored using this exact replacement mid case from EBay. The eBay item description mentions that they are all legit NOS Service parts. I personally don’t care for period correctness of the watch as a whole, but I do find it important that all parts are genuine omega. Could any of you provide feedback on wether this case and crystal are genuine Omega service parts? It would be very much appreciated.

EBay part link: https://www.ebay.com/itm/2254650796...puAwn52B_dSQA3u3bMpI0An6Muu5R2XAaAnH0EALw_wcB

Pictures of my speedy:

Ok good to know, thanks for the reply! 👍🏼