That is a PzIV --note 8 road wheels and muffler.
PzIII E thru N have 6 road wheels; PzIII A thru L have two exhaust pipes on the outside of the back panel lower.
I’m actual surfing for the L and its muffler right now. (Is it the earlier type or later wading type? The Late L, M and N has the wading type.)
This is early PzIII muffler type (attached to an befel/beo command/radio variant --note bed frame antenna hanging poultry):
Also often no pistol ports on late L through N (retro’d down to L and J).
Pz III / Ausf. D in Afrika
The PzIII D had 8 road wheels and older cupola type (and different mantlet). That image is a PzIII N, without side schurzen (rare).
Note its late cupola type and kurz [short] 75mm gun. Also note rear turret stowage box (“Rommelkisten”). That developed around the G, produced on PzIII H. Also note no hatch on side hull in wheel bay. All PzIIIs up to Late L had a hatch there in the wheel area. Also see the first return roller is way forward. The A thru G had that back a bit.
Nice barbed wire on PzVI! Poor man’s Zimmeritt.