Will email pictures after I upload them from camera but wanted to give you information I found upon closer inspection (and finding out that I was not answering correctly).

1. The cartiridge filter is a Hayward C-1100. It is not on the manual that you provided the link for because it is a Star Clear filter and the manual only listed Star Clear Plus filters. I did a search on the internet and at Hayward's site and couldn't find a manual for Star Clear. Could it be that it is a discontinued model?
2. The pump is a Sta-Rite pump coupled to an AO Smith electric motor (part I wasn't answering correctly). Same issue as with filter. Internet Search and the OEMs web sites do not have these models listed any more (AO Smith has a # of 3/4 horse power motors but none that has the same exact specs as the one that I have).
3. To answer your question, yes the filter does have a relatively new pressure gauge (I used teflon tape when installing) and I will clean filter and give you before and after readings.

Thanks.