Endlink authentication - numbers 6, 506, and 516

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Old thread resurrection to keep from starting yet another thread on this topic.
Just looking for confirmation that these end links are indeed fake/reproductions. The "6" doesnt look right to me, no knob and font is off I think but just want to double check with the experts. The inner "lines" are either non existent or sort of scratched on to my eyes. Again, I think they are not authentic but if I am wrong please correct me.

Replica no6s unfortunately.
 
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Yep, the guy offered me these and don't answer to all my questions... Be careful.
 
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Reviving an old thread after copious CPR: can anybody tell me whether the exact width of the no. 6 and no. 506 end-links are the same via measurement? Thanks.