>>20082117interesting pic.
To add something to this, pic rel are 2 coins from my collection from former French Indochina (now Cambodia, Laos, Myanmar, Thailand and Viet Nam) currency during the LMU standard.
For colonies you had the composition (silver), the purity (0.900) and the weight (27g) marked on the coins so the locals would trust western currencies and trade with them. It also was true with other colonial powers such as the US, Spain, etc..
Also any depreciation/diluting was very clear thanks to this system : on the left coin from 1894 you can see the weight of 1 Piastre = 27.215g, and on the right (1904) = 27g.
So 0.21g in a decade (less than 1%).
I wish we'd have this level of depreciation today, instead of losing 10%/year kek (salty kek).