Super Bowl ticket (1977) help?
 

I am helping a friend sell a number of vintage memorabilia items and included is a 1977 Super Bowl ticket stub (Raiders vs Vikings).

I’m not a ticket collector and there just isn’t much on Ebay sold other than a few ratty looking ones so it’s been hard to comp.

To experienced ticket collectors here, is there enough value to justify the cost and time to submit to PSA for grading? Any reliable sources of value that you can share?

I am still looking but thought some here might also have some advice - thx

Jeff