Rear Brake Drum 10" by 1.75" part number

Nominal 10" x 1.75 Drums for the 5 x 4
Centric p/n 122.63044
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These are their standard drums. Functional. OK quality, made in China.
AFAIK there's only one company making the castings and they make batch runs.
The QC checks and machining work is the only possible difference between drums in the retail stores today unless it happens old stock in a small store that just happen to have some collecting dust on shelf.
looks like 5x4.5 bolt pattern per the link in the post
Yes agree 5 x 4.5 were on the linked page. Need to go the first pages of the thread to find the 5 x 4 bolt pattern info.
Found a Source for 10” rear drums with 1-3/4” shoe
The Centric premium are NLA - maybe forever. While waiting for the new drums had my old (but not original) drums lightly cut and the shoes arced to match.
So the new drums are just on the shelf now as reserves.