Batboard

I have a bunch of UHF DP-1400 portables and they all have a 9cm stubby antenna. The antenna says Motorola UHF in the plastic moulding, and at the base connecter is surrounded by a white plastic ring. There is a blue paint stripe accross the base of the MX screw thread, but no other markings.

Does anyone know how I can identify this antenna?

'73
ZS6HZ