I'm after help with these stamps, I don't know what colour they are?? The OS stamp colour isn't as bright as the others. Any help would be good Thankyou
It's next to impossible to tell shades like this from a computer monitor.
The stamp with the "OS" perfins looks faded.
Find a stamp in your collection that was issued around the same time that was printed in only one color. Compare it with what you have. Usually that works.