I'm confused about this issue of stamp. Identification is way beyond a beginner like me.
Here is the first one that I'm looking at ... front and back. I have another green one scanned with '5' on the reverse.
1861 - 1906 Issues
Is anyone able or willing to help with this one? I've been looking through my Scott's catalogue and trying to understand. Yes, I'm confused. But I'm finding it all very interesting.
:-)