That number looks like someone put that n umber on with an engraver. The Eaton number is usually stamped on the outside of the flange, or stamped on a tag.
This is similar to the numbers stamped on my Eaton pumps.
Single Pump - Product Number:
7 0 5 2 3 - R A A
This is what the numbers mean.
A - Product Number Description
70523 = Single Piston Pump
70553 = Single Piston Pump, w/ Aux. Flange
B - Rotation
L - Left Hand (CCW)
R - Right Hand (CW)
C - Sequential Numbering