To see what they say...
First is a 3c 51 Orange Brown with what looks like a NYFM cancel to me... although I have a bunch of OBs to send in.

Then there's the somewhat rough 10c 61... It's the cancel that intrigues me, I truly don't know what it is.

Then these 69s... Particularly the 30c which is a beautiful stamp.

I have a few covers that I want to send it, I can post those as well.