Piastre de commerce

At the same Cambodian market as the two dollars, I got a 1908 piastre de commerce from Indochina. I see there are two contemporary counterfeits of the coin, could you identify by looks alone? I don’t have my scale with me, as I am in Phnom Penh airport.

Looks like it has been been washed with an antique wash to make it look old, and judging from the other coins from this Cambodian market I would guess they are all fakes. Please don't purchase any more coins from this market it's all fakes from the looks of it.