These are just for fun and do not supersede the 100 coin = 1 slot standard. Metric is nice. Imperial is familiar. So, here’s both.

Coins are generally 36mm in diameter and 2.84mm thick. Since Roman and Greek coins were over 95% pure, that is the case here.

Metricx1x100x1000
PP61.98g6.19kg61.98kg100 = 1
GP55.83g5.58kg55.83kg100 = 1
SP30.32g3.03kg30.32kg200 = 1
CP25.84g2.58kg25.84kg200 = 1
ALL2.89cm30.35L3.5LN/A
Imperialx1x100x1000
PP2.19oz13.65lb136.65lb100 = 1
GP1.97oz12.3lb123.10lb100 = 1
SP1.07oz6.68lb66.84lb200 = 1
CP0.91oz5.69lb56.97lb200 = 1