Jelfa Test Prolong 100mg/ml-2 types

Old Balls

Pre-cycle pic
my question is same gear ordered from same source..one amp has small orange line and dot on neck (left amp), the new one has larger orange line, dot on neck and white ring around the very top (right amp). Any reason they are dif? Anybody heard anything...just looking for info, thanks fellas.

Trying to load pics..file to large and I am a tech tard
 
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