jonathanb ✭✭✭✭✭

I'm pretty sure we did. He didn't hear it. He still doesn't hear it. But we told him. Let's see how many misconceptions I can spot, for the benefit of anyone else coming across th… (View Post)

There's something about the XRF process that makes tungsten (and selenium) a false reading for gold. I saw similar results in my writeup at https://www.so-calleddollars.com/xrf_results.html (View Post)

That's a particularly nice example! You can see that the lettering on the reverse must have been hand-punched, considering that each letter is tilted differently. You can also very clearly see t… (View Post)

(1.) Are your marks raised above the surface of the coin or lower than the surface of the coin? (2.) Depending on your answer to (1), list the types of error (by name) that can cause marks of that ty… (View Post)

An unusual medal where enameling is an integral part of the design rather than added as an afterthought. (View Post)