I got into this a bit when researching my latest Panther project.
It is by no means detailed but here is a little reference info.
The Hl Panther G represents a late-war version, made in Oct. 1944 - on.
HL Panther, time-frame
- Chin Mantlet ("Kinnblende") introduced
- Flame eliminator for tail pipes
- Crew compartment heater (seen on left side, rear deck)
These features set it as Oct. 1944 and beyond.
No Zimmerit, that was discontinued in Sept 1944
Oct 1944, Ambush Camo stopped
Dec. 20, 1944, Dark Green became the base colour
Of course, lots of people happily make them up in earlier camo colours/patternssuch as used on the A's and D's and they still look good
"Luck favours the prepared!."