Stamp Community Family of Web Sites
Thousands of stamps, consistently graded, competitively priced and hundreds of in-depth blog posts to read
Stamp Community Forum
 
Username:
Password:
Save Password
Forgot your Password?

Welcome Guest! Need help? Got a question? Inherit some stamps?
Our stamp forum is completely free! Register Now!

An Aussie In Need Of Some Assistance Identifying

Previous Page
 
To participate in the forum you must log in or register.
Author Previous TopicReplies: 16 / Views: 761Next Topic
Page: of 2
Bedrock Of The Community
Australia
36307 Posts
Posted 07/05/2021   9:47 pm  Show Profile Bookmark this reply Add rod222 to your friends list  Get a Link to this Reply

Quote:
I would define a "Changeling" as a broad term to refer to any change brought about typically by light or chemicals.

In the chemical realm, there are acids and bases, organic and inorganic compounds, etc. Some contain oxygen, some don't, etc. "Oxidation" reactions are only a subset of the reactions which could produce a changeling. Equating oxidation and changeling as the same is not scientifically valid.


Agree


Quote:
I believe that the ink used for the orange stamp was not cleaned off properly before the run of olive stamps began.


Patently incorrect.
Send note to Staff  Go to Top of Page
Page: of 2 Previous TopicReplies: 16 / Views: 761Next Topic  
Previous Page
 
To participate in the forum you must log in or register.


Go to Top of Page
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 - 2022 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 Use    Advertise Here
Stamp Community Forum © 2007 - 2022 Stamp Community Forums
It took 0.12 seconds to lick this stamp. Powered By: Snitz Forums 2000 Version 3.4.05