RC72-f?, Is there a way to identify a deck model?

[Veej]

RC72-F2?, Is there a way to identify a deck model?

I just recently bought a used F2100, with an RC72 deck. I'm trying to identify the mowing deck. The label has the last digit scratched off. The only visible markings are RC72-F2, then stops.

Is there any way to identify the model other than the label? Are there certain measurements I can take, etc.?

I did a bit of research, and it appears that there are only 5 models that will work with the F2100:

RC72-25
RC72-20
RC72-F20
RC72-F24
RC72-FZ21

So unless I'm mistaken, it can only be one of the two (F20 and F24). Are there visible/measurable differences between these two?

Also, many parts are serial number dependent. Is there one stamped on the deck somewhere? It's not visible on the label.

Thanks,