The seller's description seems to fit. Looking at the size of the tuning cap and coil this *might* be a shortwave set. Kinda hard to tell.
My preference would be to get this one up and running rather than cannibalizing it to build something else. You can build a Twinplex later
This is probably a better radio than a Twinplex.
This one looks like an 0-V-2 style - a detector circuit with 2 stages of audio. Can't say if its a regen but if its shortwave it probably is. The biggest scourge in old 20s radios is open interstage audio transformers so good luck! Replacements are available so its not a lost cause if thats the case.
And you can find a match for the mismatched vernier. Dunno which one is wrong