How to identify pololu micro metal gear motor from other brands

Is there a way to identify pololu micro metal gear motor from other brand micro metal gear motor like n20.

Thanks,

Hello.

The best way to ensure you are getting one of our micro metal gearmotors is to order directly from us or one of our authorized distributors, and any new units of our gearmotors should be sealed in packaging with our label. We generally cannot positively identify some loose motor as ours, but we might be able to rule it out if you send us some pictures.

- Ben