Back in the 60's I used osmium tetroxide as a heavy metal stain in college electron microscopy work for chromosomes of Drosophlia and bacterial...
In case of a US-Wide or World wide " Will mankind survive tomorrow" who will sell you anything for silver or gold or cash if they are not sure...
The glucocats react to the acetone content in your breath. I have wondered what they would do if one was using acetone on their coins. IMO, Jim
As I recall seeing as an illustration in a book or magazine ( yeah way back then) that the base of the obverse and reverse were different enough...
As reading down the thread, it was my first thought also as I have seen silver plated Chinese Copper core coins that had this coloration. I am...
The last 2 steps for minimum to no residue on a coin, is that after any treatment , do a final rinse with water, drain by holding between thumb...
Cointalk seems to be blessed (or cursed) with an abundance of scientific based individuals. I know at least 8+ are chemists or chemistry teachers...
Just let it evaporate into the air. People breath out acetone from metabolism, People with diabetes can breathe out 1000X of a normal person and...
I see no verifiable doubling. Jim
I believe it might be correct, but in today's bizzaro world, nothing would surprise me. :muted:
Aww Jeff, Some people on here seem to like misery. Real Hoarders don't sell anyway no matter how high the price goes, to them it will always go...
Maybe a trust problem with tellers?
Hi all, I have heard from Thad and he very much appreciate the feedback and wishes he could readily provide more of his efforts, but like all of...
The subject is "In God We Trust " on money all other political statements or religious statements not dealing with such will be infracted.
Not a paper person Steve, but was there any time there was still re-imbursement of the certificate with silver they were punched to cancel further...
Take a look at these photos from coppercoins. Notice that a DD will increase the thickness of the doubled area , generally with one image staying...
Here; http://coinauctionshelp.com/UNC_TPGS.html#.XjHemiOIaUk
"Peridolia on aisle 3", Break out the denial papers!
Morris, reduce the magnification a little, it seems at its limit and use some books or a box to stabilize your hand or camera so it stays in...
Looks like it. Jim
Separate names with a comma.
