Stamp Show Here Today Podcast Test

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[@ThiagoVergueiro]

I have this one!

[@CornchipSO]

I'm new to stamp collecting and I appreciate this video, I purchased a perf tool and started going through my stamps I believe I have found a scott 596 As the perf 11 lines up, darker green color but it's on a postcard and I won't even attempt to remove the stamp. I can't seem to find anywhere to help me. If I do have a 596 I would give $10k of what it sold for to whoever it was that helped me

[@lzrdz74]

How can I know what my stamps are worth?