Coin 2 sols Saint Domingue 1792

Hello
I met on the EBay coin, which the seller defines as an imitation of 2 sou coin minted in Metz for use in Haiti. Could someone of the experts explain what are the signs of imitation ? How is it different from the original coin? (20.36 gr, 31 mm)
Many thanks in advance
Regards
Yuri.

Topic linked on the French site:

Deux « posts » sur le site anglophone

From ALM on the French site:
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Quote: "ALM"Pour ST DOMINGUE, Lecompte ne référence que 2 monnaies toutes deux de 1791 !!!

─ Lec.10 en bronze de 19 à 20 g et 33 mm
─ Lec.10b en métal de cloche de 20.2 g et 36 mm

Donc pas de 1792 pour ST DOMINGUE dans le Lecompte ...

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So, there is no 1792 dated coins in the main reference work on these coins, the "Lecompte". There is only the date 1791 in both bronze and "bell metal" (a copper and tin alloy).