I still have my first Calypso from 1966 and it works just fine and I still dive it. I also have a Mistral from 1958 given me about 68 and it still gets dived. I have lot's of my original and still fully functional gear from the late 60s and early 70s. The so called vintage or "traditional" gear is actually much more sturdy than the modern plastic stuff. I have new gear and everything in between and a hole slew of 80s stuff. They are all fun to dive. I just bought a brand new Aqua Lung Legend to see what the fuss was over, it is not a very good regulator, does not breath well and seems cheaply made of thin plastic.
It is fun, I can dig back into my dive closet and pull out the exact items I used in 1968, 1973 etc. Some modern gear has just gone crazy in price and non functional design --example--these weird snorkels they make now for 60 dollars!!!! My latest young dive buddy refers to traditional gear as old school, yeah, maybe, but it is more funtional, more streamlined, more durable.
In this picture that is a circa late 60s sharskin 1/4 inch beavertail suit, early 80s Tekna T2100 second, circa 1973 Royal Aqua Master with Phoenix conversion, early 80s Seatec wing on a Hammer Head BP with new Mares X Vision and 1968 Voit weight belt, Luxfer aluminum 80, ScubaPro Super Jets. I am just about to be handed a slung 30 buddy bottle with 1980s Tekna T2100 regulator. The only reason I use that stupid Mares mask is that it has bifocals which are handy reading my buddies even more stupid dive computer console thingy. The console I am using is all rubber 70s ScubaPro mini universal with 1974 USD SPG and mid 80s Tekna super accurate 0-240 tell-tale depth guage and early 80s Princeton Tectonics mechanical pressure activated analog timer and old Ikelite compass on wrist. The Dacor whisle I found on the bottom a long time ago and the Tekna knife handle you can see is also from my 80s period---now I am in my eclectic period. N