Scott # 604 Coil Stamp - Weird One...?

Hi guys..Take a look at these so called coil stamps...One is bigger than the other and under UV light the paper colours and tagging are different colours also...Any ideas..?
Thanks, Robert

Hey wert. I don' t know much about fluorescence on stamps, but I see Unitrade lists four different versions.
HF = high fluorescence
LF = low fluorescence
DF = dull fluorescence (uncoated non florescent paper)
HB = hi brute paper.

Again, I don't know what these mean, not my collectiong area, but that might explain the different colours you're seeing. The catalogue also says that soaking the paper can effect the fluorescence of the stamp.

As for the trim, the catalogue makes no mention that I can see. Just a bad day at the cutter, maybe?

One was hand cut from an imperforate pair, Scott 604a?

As the right stamp has a glossy finish, it can't be DF - uncoated paper (604iv), so I think it may be LF (604).

The left stamp doesn't seem bright enough under UV for Hibrite (604i), so it could be HF (604viii).

Wert - check the perfs as they do not match in the top 15% of the stamps. Should be 10.0.

Not sure why the size difference, unless soaking made one stretched or one shrunk.

Thanks for all the help and suggestions...I will look t every one of them.

Robert

Robert, luminescence is a bit like quicksand. If you don't watch it very carefully you will drown in it!
I am not familiar with Canadian coil, but my experience with US coils I would suggest your two stamps are the same. Just a case of more or less taggant in my opinion.
Sorry, forgot about the difference in height. I think it is just the cutting knife was adjusted sloppy. A US coil series, antique furniture, shows a variation in height also. I suppose a specialist will collect these varieties?

Peter

Ya....your probably right Peter....most people would have posted it to I would imagine..thanks.
Robert