NSP ✭✭✭✭✭

Westinghouse/Bettis Atomic Power Laboratory Medal Here’s the newest addition to my “Nuclear Navy” collection, a Westinghouse/Bettis Atomic Power Laboratory medal. Similar to my USS Nautilus medal, th… (View Post)

I highly recommend Great Collections for buying (I’ve never sold with them)! Many of their coins are in the $50-$1000 range, so you don’t have to be a big spender to be able to find something you lik… (View Post)

You could probably just calculate the density with the volume and mass of the bar. Most generic gold bars tend to be rectangular with radiused corners, so you could derive a formula for the volume pr… (View Post)

Here’s my USS Nautilus medal in its, uh, OGCP (original government contractor packaging)? OGDP (original General Dynamics packaging)? (View Post)

Here’s my 1820 B-5 (G04) to complete the die marriage run. It’s a lot more worn than yours, but also scarcer. Interestingly enough, your B-4 and my B-5 were likely made in 1821, since they share reve… (View Post)