Huskemaw scope serial number location?

[teanawayslayer]

I purchased a 5-20x50 used huskemaw scope. It is pre blue diamond model. Didn’t get any paperwork with the scope. I’ve gone out and done all the shooting for the turret data. I went to there website and said I needed a serial number. For the life of me I can’t find it anywhere on the scope. I’ve tried calling them and emailing them with no response. Would anybody happen to know where I could find that number on the Scope itself?