NOS OEM Minneapolis Moline Piston Ring Sets (enough for 2 Pistons) with boxes as shown.  It has manufacturer's stampings of 10R930, R, Z, RE Power Units, 165-4 Power Units, 206-4 Power Units, and Cast Iron Pistons Only.  Check to make sure that these will fit your application.  These are new, but please be aware that they have sat somewhere in the box for several decades, so there are be signs of wear on the box, cardboard deformation, dirty box, etc.  Great item for someone to finish off that restoration, rat rod, or hot rod or just decorate their man cave!  Look the pictures over as they are part of the description and judge for yourself!

AS WITH ANY STANDARD PARTS, NO RETURNS ACCEPTED.  Item is for sale locally, so I reserve the right to end listing early.  International buyers through E-bay's Global Ship only.  It will take a few days to get item shipped.  Please let me know if you have any questions.  Thanks for looking!