I don't think it is "recommended", however used widely, I use it. I saw a video last year of a stamp "expert"? expertising a 2 million dollar stamp (supposedly), and he dunked the example in lighter fluid. It turned out a common US.
Disclaimer: While a tremendous amount of effort goes into ensuring the accuracy of the information contained in this site, Stamp Community assumes no liability for errors. Copyright 2005 - 2026 Stamp Community Family - All rights reserved worldwide. Use of any images or content on this website without prior written permission of Stamp Community or the original lender is strictly prohibited. Privacy Policy / Terms of UseAdvertise Here