I do not have experience with bronze disease
It is a transfer die fake
, and I do not know if the authentic coin it was overstruck
on had bronze disease
or if the patina
broke out from overstriking and makes it look like bronze disease
In pictures it looks powdery like bronze disease
I do not have it in hand, will receive it end of next week.
I would remove the powder with knife, and hoping that it will stop.
Soaking in destilled water baking or chemicals to neutralize sulfided would be to much work
for such a cheap fake
With best regards,