I have an Interstate and I think I've got all the usual pockets on it but there must be some aftermarket piece that's been grafted onto the lower right side. it has 3 sort of dovetails that must have held somethingYou have an Interstate? Or an Aspencade?
hondapartshouse.com has exploded parts drawings if you look up your bike. See attached for an '85 GL1200 Interstate for an example. This is the "1985 HONDA GL1200I A FAIRING POCKET" diagram. There are a couple different diagrams for this area of your bike. Often times, if you're looking for a part and it's no longer available from an OEM part site, I usually copy and paste the part number into google or ebay. Sometimes I can find what I need on the used market or even new from some random online site.