rmpsrpms ✭✭✭✭✭

I've been experimenting with a new focus stacking technique. Here's a video done with the new technique: https://www.dropbox.com/scl/fi/xrpt9sl65ek87kzh6cqwz/Video-2026-07-07_09-25-43.mp4?r… (View Post)

Here are some views of a 1957-D Cent with MD, made more interesting by a large die chip that is also affected by the MD. Note the MM is not affected: (View Post)

I've done a bit of surface analysis of toned coins in the past, showing that the toning creates a surface "crust" when viewed and lit properly. I expect fingerprints will be similar, a… (View Post)

The latest BIE listed is 2017P: https://cuds-on-coins.com/ldb4-2017p/ (View Post)

Yes, I forgot about that. I believe it was listed on Cuds On Coins in both BIE and RIDB categories. (View Post)