It's an Aluminum Tech. Late 60s, early 70s. Should have a date code if it's US made. Seen British ones like that as well. Should be a damn fine shaver!
I'm currently looking for something like this, I just love the ornate handles. Now if I could just get one pre-WWII with a fancy handle that would be awesome.
Given that it's aluminum, how much lighter is it than the earlier, heavier gillette models?