Omnadren lot 910061, real or counterfeit?

[Buttman3]

Omnadren batch 910061, real or counterfeit?

These pics are of the same amp at slightly different angles and lighting.

Couple things I noticed:

(1) The bottom of the amp is concave (pic #4 from the left)
(2) The ink on the word "Omnadren" and "250" can be rubbed off relatively easy (last pic on the right).

What do you guys think?
Thanks in advance for your help.

 

[1098r]

looks fine to me bud, look exactly like my old amps, id say your gtg

 

[Buttman3]

Thanks, but what about the ink that can be rubbed off?

Can anyone else please help confirm this?

 

[1098r]

dont worry about it, mine did too (ink rubbed off when i seemed to rub/play with it), trust me looks gtg, if your that worried just pin one, you'll know its real by feeling a little sting around the inj site next day