Stamp Decoder Ring, Hidden 3-D Images

So im going through my
Scotts Catalog looking up
US 3261 $3.20 multicolor
Space Shuttle Landing
Then I read
Hidden 3-D images can be seen on Nos. 3261 and 3262 when viewed with special "Stamp Decoder lens sold by the USPS.
(ENTERPRISE/COLUMBIA/CHALLENGER/ATLANTIS/ENDEAVOR/DISCOVER)
Any one have one of these decoders ?

Yes, I have one, but what is your query, as you seem to already possess the basics as to what it is all about? There were 42 USPS stamps that incorporated scrambled indicia from 1997 through to 2004, if I recall correctly.

If interested in an in-depth 45 minute analysis of the decoder and scrambled indicia by collector Henry Jehan, go to APS Stamp Chat on YouTube at

I have several of them but never use them. Too bad the concept could not be used to detect fake stamps.

Apparently still available from Mystic:
https://www.mysticstamp.com/sd1-scr...amp-decoder/

Thanks for the input , since this was my first time seeing
then learning about the decoders I thought the efforts
would he beter spent by posting on here so others would
have a place of reference.

65170 : I will be watching the YouTube video you posted today, thanks for the info ,
Germania : thanks for the link , I found some to be cheaper on ebay, $12.99 while others matched MysticStamps price of $19.99 and some where even higher than that.

Angore : That would be the perfect tool to get passed all the fakies out ther