Hello all you helpful Delcampers--

I'm wondering if any of you have had success listing RPO cancels. If so, in which category did you list them?

When I searched, I found some in Philately-->covers (date); some in Philately-->FDC; others were stamps with SotN RPO cancel so they were under stamps. This is a postcard with what would be a nice early South Dakota street scene but it has damage on the front so the buyer would--I assume--be more interested in the cancellation. Would people find it under Postcards-->Railway-->other, say? Do the stamp buyers get upset if I call a postcard a 'cover' if I were to list it in Philately-->US covers?

Thanks in advance!

Alan