Took a look at my reference album (31st Tank Bn) and didn't see any late hull M32's
.... The ARV's used by the 31st were based on the M4 and M4A1, all early.
On the "cool things discovered" side:
Unit markings were all over the place on the nose casting of the tanks, crooked, one higher than the other, etc. Lots of mud on the vehicles below the sponsons!
Uniforms: Wools pretty much all around on these guys. (in the summer, they liked to work with their shirts off) Of course, there is ONE rebel in HBT pants and blouse, so those were used too. Didn't see any coveralls. I've had other WWII mechanics tell me coveralls weren't worn by them either so I guess that's pretty much a tanker thing.
Sometimes leggings were worn, other times, just boots (buckle type and combat shoe) you'd see some guys in leggings, others without in the same photo(I'd bet it's the drivers wearing leggings to keep from snagging their pant legs on those darned latterals).
Rank insignia and unit (armor triangle with 31) patches were worn on the sleeves of the wool shirts and tanker jackets on some, others didn't wear any.
By the looks of it, stars were present on vehicles fresh from the depot, while those that had been around a bit had them painted over.
Name on the vehicle: SNOOPER (even a photo of the guy painting the name on... that would be a fun dio!).
Other cool photos: Some knocked out King Tigers, Mk IV's etc. An M3 half track (what's left of it) tossed up the side of a building and an M5A1 that broke through the ice... a sequence starts with just its antenna sticking out, then slowly extracting it from the water. (Hope the crew got out! BRRRR[:0]). Refugees living in caves, German POW's, sunken Shermans (and M32's!) etc.
Anyhooo, hope this helps, it was fun looking through the album again!