Luik, Escalin in Koper?

[usen]

Hello to everybody,
one more time ive found a coin wich does not looks like what it should be.
Ive got this Escalin from 1753 wich seems to be struck in copper. Does any knows something about such a piece, or is it just a strong patinated Silvercoin?
Size: 25,4mm
Weight: 3,43g
Picture 1: http://i44.photobucket.com/albums/f7/usen/coins/KupferoderSilber1.jpg
Picture 2: http://i44.photobucket.com/albums/f7/usen/coins/KupferoderSilber2.jpg

It would be nice if somebody could help me or tell your meaning!
Thank you in advance and sorry for my 'not so good' english.
Kind regards
usen

[vcrik]

  Deze munt heeft een soort zwarte patina. Het betreft wel degelijk een schelling (escalin) voor Luik.
groeten,
vcrik

[usen]

Thank you for your answer, after a soft cleaning on the rim (wich i tried to avoid by asking on forums) i think it is silver aswell.

Kind regards
Frederik