That's an EG. A 24" barrel on it is interesting. The late 99A V1 rifles had a 24" barrel in 303 Savage, but I think that was the only model. So it's either new production from 1945 or a leftover 99A barrel.
I'm guessing a favored retailer, customer or employee send in a request for it. They could do it easily enough, they just didn't catalog it for general sales. Cool gun!
Rory, you forgot the 99B, Style 2.
I have an EG (so stamped on the front of the frame), 24" barrel in .303. Serial # 3996XX (checkered). The barrel is a takedown barrel. Sqweeler has (or had) an identical rifle, serial # 3998XX.
UpThePole, if you remove the forearm and look at the bottom of the barrel and it is stamped "OFF" with a directional arrow, it is a left over 99B barrel. Otherwise it is a 99A barrel or special order as Rory said.
I'm in the using up left over barrels camp. During and immediately after WWII Savage probably used whatever they had to assemble salable rifles - catalog be damned.
