Hi y'all - I've recently dug out my deceased father's stamp collection, and two items intrigued me. I have 2 red mint US Internal Revenue stamps ... a $2 (with T. Ewing engraving) and a $20 (with Wm. M. Meredith). I believe they're from the 1960s, but possibly the 50s. Where can I find more info (Scott #s and values) for possible
ebay sale? Thanks much. David
