Among members here we have seen thousands of B7971 and as Michail wrote:
'I have not seen a completely black plate'. Should it be then assumed
that we can not use whitening of the back-plate behind segments as a
clear sign that the tube was used? Sorry for pushing this back over and
over. I just want to deal with this 'myth'. Either way is fine with me. ;)
On 27-May-13 21:07, [email protected] wrote:
I have seen/handled over a thousand of these. I have not seen a
completely black plate.
Michail
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