In aviation, if a vintage aircraft crashes it can be rebuilt literally from the data plate with only the data plate original as long as the resulting aircraft meets it's original TC (Type Certificate) and the data plate is re-affixed.
Applying that thinking I se no problem with repairing or rebuilding a regulator in kind and in method as it would have been done "in the day" or even now in this day. What I am more concerned with and mulling over is parts bin regs that are put together or even manipulated to increase their value such as awapping nozzles out on a DA or faking a RAM or taking a Navy top can and putting it on a USD DA and calling it a Voit Navy.
I was just joking when I said I was going to put a forgery together and sell it for the (1000) dollars a Navy has been getting lately (vs 250 for a DA). You see the potential. This has nothing to do with Faux labels ( I love those new labels--thanks a million for those great labels).
I found here
http://www.vintagescuba.com/voit/voitnavy.html some answers to my questions. it does appear most Voits came with a satin back can, smooth top can, satin body parts, satin yoke and wing nut. I notice the Navy on this site seems ot have a substitued long yoke because it is smooth shiny chrome and everything other is satin.
Details might save somebody from spending a thousand dollars on a DA with a Voit navy top can---lol.
Doesn't everybody need a Voit Navy DA RAM heavy yoke or a round label, square label, DA RAM heavy yoke or a 50 Fathom DA, RAM Phoenix with DA round label satin can?

Can't just leave all those parts laying around.
In this photo you can see that the Voit 50 Fathom has a satin bottom case and a bright chromed upper case, bright blue data plate and lovely gray hoses and notice that the yoke is also satin chrome. Perhaps this is typical of most all Voits except maybe the very last Navy models?
Nem