Parker desk pen identification

[crowdog]

I just picked up a parker desk pen from a local antiques shop that I frequent for 4 bucks. It has a medium hooded steel nib on it. I don't know how to identify which model it is. Here is a picture: and the nib:

 

[Eeyore]

45.

Nice one! Do you have the stand with it as well?

(the 45's suffer from section crimp, but that does not affect their performance)

 

[crowdog]

No, there were three more and this was the nicest of the lot. I am now on the hunt for a cool looking stand to match my desk at work.

Marty