Scat Trak 1500D location of Vickers hydrostat model code?

[azeller22]

Wondering where the model # is located on the hydrostat? Could it be on the bottom side? I couldn't see anything on the sides or top starting with TA- like I was expecting to find. I see a 23F990KCT1 stamped on the top of the back flange next to the u-joint. Thanks