The originals would have been point to point wired while the reissues will used a printed circuit board, I've seen inside a few of the more recent Fender reissues and whilst they do sound nice, inside they are using much cheaper components than the originals had, this may not matter to you but if something does go wrong it may not be as easy to fix as an amp that was point to point wired.

One option is to build your own, Mojotone make a really good kit that is much closer to the original.

https://www.mojotone.com/kits/BlackfaceAmpKits_x/Mojotone-Blackface-Princeton-Reverb-Style-Amp-Kit_2

I've built a few amps myself and as long as you take your time they are not too difficult and you end up with a lot more amp for your money.