All About Pocket Knives

Didn't see a topic for the SCHRADE+ 47OT BEAST

This is another of my EDC's dated, as I understand, from 1997 to 2004.
Can anyone tell me what the + indicates.

I think Schrade+ means stainless steel.

Schrade sure got way out there with the Old Timer brand, didn't they. Hard to picture grampa sitting on the porch peeling an apple with that thing.