Rip-It Senoir ASA Question

I am RiP-It Retarded.

I picked up a Rip-IT Senior locally, it has what appears to be a very thin "W" or "M" lightly scratched in the end cap. IT's off-center so I wasn't sure it's a warranty validation thing or not? Any advice?

If not a warranty thing, where may I find a marking if returnable?
 
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