Interesting question
That is a good question. There are different standards as to what would constitue a "Golden Age", though. If you are talking about from the perspective of crafstmanship, hand finishing, and overall beauty and pride of the product, I would think that the pre WWII examples from Colt and Smith & Wesson would be the top of the hill, and possibly to include some of the post war revolvers. But pre WWII had the introduction of the Hand Ejector, or Triple lock, along with the fine Colt guns. A case could be made for the autos made from about 1900 to WWI, The Borshcart, the Lugar design, and of course, John Moses Browning designs, the 1900, 1903, the 1905, the Colt/Browning/FN,Baby, and of couse the epitome of pistol deign- the peerless 1911. (No bias here, really
!) Along with some others I have left out. Then you have the period that starts, I guess, in the Sixties, with the Smith model 39, Beretta's entrance to the world market, the incredible Sig P210, ( I have handled one, they are that good!) the Walthers, etc.
And then the explosion in the eighties of every concievable type of high cap
"WonderNine Crunchenthickers", as Col. Cooper would refer to them. Some of which are better than others. From the perspective of the availability, this period, up to the present would have to rule IMHO, just try to take a count of how many different Pistols there are to choose from now. You would need a calculater just to count how many Smith & Wesson varients are currently available. Those boys must drink a lot of coffee!
.
In my humble opinion, we now live in a truly "Golden Age", between the used market, and the dizzying variety of pistols, and to a lesser extent revolvers, that we can choose from, and of course argue over endlessly face to face or in a great forum such as TFL. "My -Fill in the blank-, is the best gun ever, and your - fill in the blank- doesen't even make a good paperweight
"
I hope we all realize just how truly great things are for Gun lovers, and more importantly, for those who cherish individual freedom and their God given right to exist and defend their families and loved ones, and realize that if we do not keep up the fight, what we take for granted may be gone forever. Excuse my while I step down off of my soapbox.
JMHO, and as always, YMMV
Willy