Postage Due...inter Rev. Stamps

Hello again.

I was hoping someone might have a little information on these interesting stamps.

Thanks again so much.

Looks like you have:

J62 = 2c Postage Due
J67 = 50c Postage Due
R152 = 2c Liberty Revenue Stamp
R164 = 2c Battleship Documentary Revenue Stamp
R169 = 50c Battleship Documentary Revenue Stamp

You should check the perfs. on the first two postage due stamps. The Scott #'s quoted would be for the most common perf. 11 (unwatermarked) varieties. They are also known in perf. 10 and perf. 12 in watermarked and unwatermarked varieties as well.