I walked into a local music store and found a Rogers "steel" snare for a good price. Turns out it was a Powertone that I think I got a fair deal for. Only problem is it was missing the paper tag.
My guess is late 60's early 70's. The only clue is a music store ( I am guessing long since closed) stamped on the snare side head. I have yet to clean this guy up but will post some pictures when I do. I imagine it will come out as clean as my Gretsch 4160 did.
Here is a link that mentions the music store being not far from Manny's music in NYC.
http://talkinaboutmygeneration.com/2011/02/mannys-music-on-48th-st/
Manny