OK. It is about Panzer IV G early production. (Not too early in my opinion).
Here some reviews:
Mike High
Cookie Sewell
The kit it's ok, nice details, but not too early, like I said.
This tank was build in 1700 copies in late spring 1942 untill summer 1943.
In may 1942 - frontal armour protection was increased by welding 30mm ZUSATZPANZER on to the hull&superstructure front - in kit both variants
June 1942 - a rack for two spare roadwheels was mounted on the left track guard
Brackets to hold seven spare track links were welded on to the glacis plate
September 1942 - instaled Notek Lamp
The signal ports on the driver and radio operator hatches were removed
Tha ball-shaped muzzle brake was replaced by a double-chamber muzzle brake with four side ports
February 1943 - sets of three smoke candle dischargers were mounted on the left and right turret side. I must mount this smoke candle because otherwise in kit there is no hook in place
A new cupola was introduced , with a single piece hatch lid. In kit is just two-piece cupola in two variants open/close
(Hilary Doyle & Tom Jentz - Panzerkampfwagen IV Ausf. G, H and J 1942-45)
That being said, I think this is more middle production (february 1943).