Where to get original style pedal? saw lots of sets w/rubber lugs? on eBay.
If you search Rat Trap Pedals on ebay, you'll find new pedals that look just like the original beginning at $20.
The reversible square rat-traps are all steel.
If you plan to ride the bike,
This would work just fine and be an improvement over the poor-condition mismatched pedals on it now.
The one-sided touring and period racing pedals made specifically for toe clips have alloy cages.
These are KKT that I bought in 1978 to replace the steel rat traps on my '77 Grand Prix, recycled later on a different project (this is the '57 Lenton frame).
Oldest photo I have of that Grand Prix - this is how I rode it through the '80s amd '90s.
If you rode your bike, it was pretty much the norm to improve it.
This has Zeus/Rigida wheelset that changed its nature, and many quality upgrades from stock.
If you didn't ride your bike, people on CABE want it today.