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Modern Issues Printed With Luminescent And Non-luminescent Ink

 
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United States
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Posted 02/15/2020   10:27 am  Show Profile Bookmark this topic Add mstocky2 to your friends list Get a Link to this Message
This is a topic I planned to post on for some time and I final got some time to do so. I like to collect modern US issues because there are so many potential varieties to find, many not documented that I am aware of. What I planned to cover is considered a specialists area by many, including by Scott. Don't let that scare you off as it is an easy to one get into.

I have been working to document the various paper types modern stamps are printed on for the Stampsmarter US Tagging & Luminescence Database. This involves using a LW UV (black light) to check the luminescence of the paper. For those not familiar a simplified example would be hi-bright versus non-brite, but that in not the subject at hand. You can learn more at the Stampsmarter site.

In hunting down and trying to document the various paper types, one thing I found is that there are many US issues of the same stamp where they have been printed with both a luminescent and non-luminescent ink(s). A small percentage of what I have found are noted in various places, but most I have not seen or found any reference to. If references exist, I would be interested in knowing of them. Scott Specialist Catalog does list a handful in a note with the stamp. I have not found references to any of these.

Now what you have been waiting for if you read this far. This is just a sampling of some of them. Note, while many below are shown used, I have confirmed they exist by finding mint examples. All images below are under LW UV.

#1550 this one can be found in a wide variety of variations.

#1895 quite dramatic difference.

#2030a one of my favorites since there are many dramatic tagging freaks.

#2045 notice the medals.

#2399 I have found mint plate blocks of both varieties and included a side by side comparison of the color bars as well.

#2426 numerous variation in the the level of luminescence.

#2533 the image below doesn't do the bright orange color justice, it is very vivid.

Finally #3522 notice the color on the side of the vehicles.

Some key words you can use to search with on the Stampsmarter tagging DB are "luminescent ink", "reactive" or "non-reactive". This will bring up some of the paper types as well. Once you see for example a non-reactive ink variety show up you have interest in, do another search with the Scott # to see or getting listings for the various varieties. I hadn't expected to find so many varieties or I would have included a better key word search identifier. A task for the future.

If people know of others I haven't found or listed yet, please post so I can add to DB.

Enjoy.
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Posted 02/15/2020   11:38 am  Show Profile Bookmark this reply Add Perf10 to your friends list  Get a Link to this Reply
That is some excellent research. Thanks for posting the examples you did. Interesting stuff.
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Posted 02/15/2020   9:43 pm  Show Profile Bookmark this reply Add gettinold to your friends list  Get a Link to this Reply
mstocky2

Here's one you haven't shown:


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Posted 02/15/2020   10:15 pm  Show Profile Bookmark this reply Add bookbndrbob to your friends list  Get a Link to this Reply
Very interesting. If some U.S. collectors were involved in counting the luminescent ink varieties versus the non-reactive stamps, then there could be a better understanding of how scarce or common they are.

Or, has anybody done, or attempted to do this with any of these?
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Posted 02/16/2020   12:23 am  Show Profile Check eyeonwall's eBay Listings Bookmark this reply Add eyeonwall to your friends list  Get a Link to this Reply
Have heard some 3033 1c bluebird have reactive ink. I really like the 185 example you show.
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Posted 02/18/2020   07:58 am  Show Profile Bookmark this reply Add mstocky2 to your friends list  Get a Link to this Reply
Gettinold,
Thanks for posting,nice cover. The Luminescent referred to on your cover is for the tagging which is not visible under normal light. In this post I am referring to the visible inks used to print the image.

Eyeonwall,
I check through numerous mint, used and plateblock samples I have for 3033. These are printed on paper with four different levels of luminescence: Non-Fluorescence (NF) with trace of fluorescent fibers, Low Fluorescence, Medium Fluorescence (MF) and High-Fluorescence. The level of fluorescence is due to density of fluorescent fibers present in the paper. This reason I mention this for people is that the brightness of the paper can skew what one sees. Below is a LW UV image of an MF paper variety on left compared to a NF paper variety on right. Colors should be considered representative; because as they say for cars your mileage will vary for numerous reasons. The background ink on the right stamp appears brighter more vivid than the left. Much of the reason the left stamp looks so washed out is due to the brightness of the paper swamping out the color of the background ink. That said, I focused on examining the plate number corresponding to the background ink. My observation is that the ink on the right stamp is somewhat brighter than the left but not significantly brighter. So it is slightly more fluorescent. I will keep looking for other samples.


Thanks for posts so far.
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Posted 02/18/2020   08:32 am  Show Profile Bookmark this reply Add gettinold to your friends list  Get a Link to this Reply
mstocky2

Thank you. I misunderstood. I see what you're talking about now. Very interesting examples you've shown. It's a totally new area for me.
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Posted 02/18/2020   10:29 pm  Show Profile Check eyeonwall's eBay Listings Bookmark this reply Add eyeonwall to your friends list  Get a Link to this Reply
not sure they come any more dramatic than what yu show (and you are so right about "Much of the reason the left stamp looks so washed out is due to the brightness of the paper swamping out the color of the background ink"

should have said I really like the 1895, not 185
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Posted 03/03/2020   10:40 pm  Show Profile Bookmark this reply Add mstocky2 to your friends list  Get a Link to this Reply
I thinks this list is fairly complete (assuming I didn't miss any from the DB) for the ones I am aware of so far. Should make it easier for people who are interested in this area to find them in the DB.

1036
1286
1384a
1445
1550
1571
1698a
1701
1848
1895
1900
1951
2045
2173a
2097
2128
2128a
2133
2195
2277
2367
2399
2426
2428
2429
2452D
2477
2482
2524
2533
2579
2603
2764A
2886
2889
2890
2912
3031
3054
3106
3122
3522
3636
3746A
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