Here is my (currently rather limited) collection of general relativity-related coins:
- Top left is the Stephen Hawking commemorative 50p from 2019. Made in honour of the great physicist, this coin has the black hole entropy formula and Hawking's name on top of a black hole design.
- At the bottom is the 100th Birthday of Albert Einstein commemorative 5 Francs coin. This design has the vacuum field equations as well as the variation of the line element (yielding the geodesic equation).
email: pmycb7 [[[at]]] nottingham.ac.uk