How To Identify 72lb. Injectors

[GNFURY]

just got some, want to make sure I got the real deal. they are all black and say SIEMENS DEKA on it. it also has two sets of serial numbers on them. one set says 3145, the other says 3-076-76771

 

[Boston GN]

3145 is the right number for Seimans 72s.
the other number it seems is just a serial number for that particular injector.

 

[GNFURY]

thanx bud.