You can have the coupons printed if you still had the old coinco acceptors that accept coupons. I had some printed fifteen years ago.
A local operator took one to a print shop and they looked at it closely. Part of the coupon was printed with magnetic ink, the other non-magnetic. So they had to make two passes with the different inks but the ones the shop made for me worked fine for a few pennies per coupon IIRC.
And yes, I'm still using the old coincos in my wash selects. Refund button is disabled.
I've never tried to duplicate a MEI coupon, but maybe a knowledgeable local printer can figure it out.