I hope this is the appropriate forum. Here's an excerpt from a stamp's
ebay listing:
"Graded 85 PF Certificate SMQ $15 (DFP mo/day/yr)"
QUESTIONS:
1. A grade of "85" (presumably "85%") can convey very different meanings depending on context. In philately, what does this tell me?
2. "SMQ" means what?
3. "DFP?"
Thank you in advance...