It's a very good idea Steve and I'd be interested in learning how things develop.
As a fellow admirer of all things retro, during lockdown, I've also thought of putting together an act - based upon the 1930's/40's. I've even been enquiring about having a vintage double-breasted suit of that era made - there's an excellent company in Huddersfield. The content of the act would primarily be the works of one of my favourite authors - Edward Victor.
I'm still assessing the pros and cons in my mind. Being semi-retired, I only work close-up as and when I want - and the majority of my act still consists of Joe Riding material; that I know has worked successfully for me over the years. However, if I was working a cabaret act still, then I might be more inclined to pursue the idea; as I think the historical aspect of the performance would have a better impact; and more importantly, some raison d'être.
That said, I have performed additional older material in Close-up as well (the paddle trick - I'll Start Again, is pure gold dust). After all, the audience aren't aware of the age of a trick or when it was released. Nor for that matter are most rip-off 'creators' these days - but that's a different discussion.
Playing devils advocate, I just wonder if spectators would be that bothered/interested anyway - don't they just want to see good magic and be entertained?
Thinking as I am writing this, I have to admit that always using Half Crowns (rather than those awful shiny American things) has generated interest from the outset. I've also used an old £1 note (taken from an original 1940's wallet) for pencil thru note that drew interest - so who knows?
If you were using period props that told a progressive story, then I think the idea could definitely have some mileage. Even in Close-up, it would be something different - and you'd stand out from the usual raft of automatons, using a Ring-flight; Rubiks Cube; or a Sharpie to scrawl over everything.
Of course, if you really want to be transported back in time to the Magicians of yesteryear for reasearch purposes, then attending an IBM Convention in Eastbourne could be a good starting point. Just watch out for the damp seats.