When I rebuilt my 1960 Olmo Gran Sport, I used a set of wheels with campy high flange hubs and milremo branded alloy rims. The hubs on the wheelset are from 1969. It has eyelets and may well be a rebranded superchampion 58. I haven't been able to track down anything on the web regarding the milremo clincher rims I own but the superchampion 58--which is a fine alloy clincher rim--was being manufactured by the mid 60s.
VeloBase.com - Component: Super Champion Mod. 58
Here is a set of the milremo rims I own for sale on eBay:
https://www.ebay.com/itm/Milremo-28-...75.c100623.m-1