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United States/Stamps : A question about tagging

 

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bluparrot

17 Apr 2015
07:30:38pm
I've noticed quite a few values for tagged varieties in the US Specialized catalog that are missing. I'm not talking about the more rare ones, but some entries may have a value for mint but not used. Some of these don't seem to be rare. Thinking

Is the reason for this that the taggant can be washed off or altered in some way when soaking? Or perhaps there is not enough pricing data to support a solid value?

-Les

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Bobstamp
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17 Apr 2015
08:16:41pm
re: A question about tagging

I don't know about U.S. issues, but collectors of tagged Canadian stamps generally don't collect used stamps for the reason you mentioned — the taggant on at least some of the tagged stamps is water soluble, and even migrates from tagged stamps to untagged ones that are stored with them, as in a nickel box (probably a dime or quarter box these days!).

Bob

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michael78651
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17 Apr 2015
10:43:13pm
re: A question about tagging

Les, I have been working on used US stamps, and I have found similar to what Bob has described for Canadian stamps. I was checking a stamp for tagging that was hard to see. I turned off all the lights and the stamp didn't have any tagging, but my fingers sure glowed green! The taggant was even on the plastic sleeve of the card holder.

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bluparrot

18 Apr 2015
10:22:47pm
re: A question about tagging

Very interesting! Thank you Bob and Michael. Just got my Lighthouse dual wave UV light and having much fun finding some nice varieties!

-Les

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seanpashby
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24 Apr 2015
09:28:55pm
re: A question about tagging

Since we are on the topic of tagging.....has anyone seen what the Luminescent ink on the 5 cent circus wagon stamp looks like? Do you use the same shortwave UV to see it? I have tons of copies and none glow under short or long wave UV.

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michael78651
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24 Apr 2015
11:10:28pm
re: A question about tagging

Which one are you talking about? #2452 is tagged, while #2452B and #2452D are not.

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seanpashby
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24 Apr 2015
11:24:53pm
re: A question about tagging

Scott lists both 2452Bf and 2452Dg as "printed with luminescent ink". It doesn't say phosphorescent ink, so I'm not sure how to tell them from the regular ones.

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michael78651
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25 Apr 2015
01:53:49am
re: A question about tagging

Try this link for a discussion on your question. It looks like under short wave UV, the ink glows orange. With the ink color being red, that may make it difficult to see the orange.

http://www.stampcommunity.org/topic.asp?TOPIC_ID=34562

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seanpashby
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25 Apr 2015
02:03:35am
re: A question about tagging

Thanks Michael. That helps.

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Author/Postings
bluparrot

17 Apr 2015
07:30:38pm

I've noticed quite a few values for tagged varieties in the US Specialized catalog that are missing. I'm not talking about the more rare ones, but some entries may have a value for mint but not used. Some of these don't seem to be rare. Thinking

Is the reason for this that the taggant can be washed off or altered in some way when soaking? Or perhaps there is not enough pricing data to support a solid value?

-Les

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Bobstamp

17 Apr 2015
08:16:41pm

re: A question about tagging

I don't know about U.S. issues, but collectors of tagged Canadian stamps generally don't collect used stamps for the reason you mentioned — the taggant on at least some of the tagged stamps is water soluble, and even migrates from tagged stamps to untagged ones that are stored with them, as in a nickel box (probably a dime or quarter box these days!).

Bob

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michael78651

17 Apr 2015
10:43:13pm

re: A question about tagging

Les, I have been working on used US stamps, and I have found similar to what Bob has described for Canadian stamps. I was checking a stamp for tagging that was hard to see. I turned off all the lights and the stamp didn't have any tagging, but my fingers sure glowed green! The taggant was even on the plastic sleeve of the card holder.

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likes this post.
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www.hipstamp.com/sto ...
bluparrot

18 Apr 2015
10:22:47pm

re: A question about tagging

Very interesting! Thank you Bob and Michael. Just got my Lighthouse dual wave UV light and having much fun finding some nice varieties!

-Les

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seanpashby

24 Apr 2015
09:28:55pm

re: A question about tagging

Since we are on the topic of tagging.....has anyone seen what the Luminescent ink on the 5 cent circus wagon stamp looks like? Do you use the same shortwave UV to see it? I have tons of copies and none glow under short or long wave UV.

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this post
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michael78651

24 Apr 2015
11:10:28pm

re: A question about tagging

Which one are you talking about? #2452 is tagged, while #2452B and #2452D are not.

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www.hipstamp.com/sto ...
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seanpashby

24 Apr 2015
11:24:53pm

re: A question about tagging

Scott lists both 2452Bf and 2452Dg as "printed with luminescent ink". It doesn't say phosphorescent ink, so I'm not sure how to tell them from the regular ones.

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this post
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michael78651

25 Apr 2015
01:53:49am

re: A question about tagging

Try this link for a discussion on your question. It looks like under short wave UV, the ink glows orange. With the ink color being red, that may make it difficult to see the orange.

http://www.stampcommunity.org/topic.asp?TOPIC_ID=34562

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www.hipstamp.com/sto ...
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seanpashby

25 Apr 2015
02:03:35am

re: A question about tagging

Thanks Michael. That helps.

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