I was perusing the websites of B&G and Abbiati, looking at their plaques. They look very similar to me. Is there any way to tell, by just looking at a plaque, whether it was made by B&G or by Abbiati? (Note: John Huxley also distributes/sells plaques.) Maybe a difference in using lunettes in their plaques?

B&G plaques:
http://www.bgchips.com/s511.html

Abbiati plaques:
http://www.abbiati.com/france.htm