id ask them first just to avoid confusion n potential problems...in the past i have submitted various mint issued proof sets as one submission n it worked out but that was like 10 years ago, their policies may have changed n im not sure u can or can not get that label....its best to be on the proactive side rather than the reactive side....

Thank you zadok. 

Well......it's been a while, but maybe I can help.  What I did when I was submitting these coins was to mark Uncirculated Set Issue on the submission form where you mark varieties and errors for those services, but without checking the box for Variety Plus or Error service.  When I did this, I wasn't charged for the attribution and sure enough, Uncirculated Set Issue was on the label.  I hope that this helps you!!!

Best of Luck!

~Tom

Just curious, what years are your sets?

Thank you Tom. I will try this also. Maybe I will get the same results. 

Basically every year from 1968 to 2020.