What Is Meant By Tagged And Joint Line Pair??

While looking thru my Scotts Catalogue I realized I do not
know exactly what Tagged and joint pair are or mean. Can you please explain??

With the Tagged stamps--how do you as a collector detect this??

Thanks!
Gussyboy1

Would this be considered a joint line pair where the darker blue ink is on the bottom strip?

Thanks!
Gussyboy1

Tagging is the printing of a phosphorescent ink on a stamp so that it can be detected by a letter scanner using a UV light. It is invisible in normal light and requires a UV lamp to see it.

A joint line pair is a pair of coil stamps with a line of ink along the perforations between them. For early coil stamps (before the 1980s) joint line pairs were collected. The transportation coils introduced plate numbers on coil stamps and are widely collected in strips of 3 or five with the plate number on the center stamp.

While a UV light is useful, tagging can also be seen as a strip of glaze on a stamp under ordinary light.

No U.V. lights needed in Buchanan..

I just hold the stamp up in the air, and let the Nuclear Plant
do the rest.

Thanks for the info guys you are always a wealth of knowledge for all of us beginners.

Bob does this mean that you glow in the dark.



Dianne

Glowing in the dark has it's advantages. You don't need a flashlight to go potty in the middle of the night!