manuel,at the moment i cannot send you a picture----i said no-magnetic but they are magnetic---all i know ,they are a new generation of pentium ----as soon as i can i will send a foto---
it is exactly as the pictures glorycloud showed to us---thanks steve for the link-----if i deplate the nickel from the lids,i will have copper lids to use as a precipitant? with which acid can i deplate? thanks all for the moment-----