Stumbled into a reasonably priced High Power with a 1975 production date at my local gun shop. Didn't realize it until I got it h0me that I'd bought an alloyed frame gun. Initially I'd planned on sending it to Action Works for a trigger job, better sights and an ambi-safety install. I also thought that I'd replace the grips since the originals are long gone and had been replaced with a pair of smooth, ill fitting, cracked grips that look like they might have come from an FEG. Since this is my first run in with an alloyed frame High Power I'm not sure what I should do with it. Should modify it or return it to original? Just how rare are the alloyed frame guns? Wikipedia talks about a "rare" Mark I Lightweight model and other sites talk about an alloy police model. Are they one in the same? Does rarity translate into value or is it worth exactly what I paid for it? When did Browning introduce an alloy frame? Does any one have production numbers? What are the correct grips? Finally, the gun has no import marks. When did Uncle Sam start requiring them? I appreciate your feedback. Thanks!