Nevada License Plates
An eight-year "rolling reissue" program removed many flat and unreadable plates from the road between 2016 and 2023. Older plates replaced first, keeping the same number, "new" embossed plates were mailed with registration sticker after the registrant renewed. See this excellent DMV web page explaining which plate types were affected.
https://dmv.nv.gov/platesreissue.htm