The rings, dot and appearance all look legit but really that doesn't even protect you these days. Counterfeiters have become very good! it was estimated that 80% of the pre bayer shering primo on the market was counterfeit.
They need to come up with a better plan. Individual bar codes on the amps that you can type numbers into a site and confirm them being real would be a good step.
In the end they make their product to be distributed through legit channels into lic pharmacies and hospitals. They don't care about the black market.
I'm sitting on a bunch of bayer amps for my spring cycle and they look good and came from a reputable source that I've been dealing with for years. Here is the catch, I won't know they are 100% legit until about week 8 of the cycle.