Supposedly that rear tire is the original. The PO said he never changed the rear, but did change the front because it got a slice in it at some point. The rear is the the exact OEM and when I dismounted it to put in a new tube (that it didn't need) I found the tube to be OEM also. Unbelievably, both front and rear tires have no cracks.
Funny story on the rear tube,,,, I checked the tire pressures before the first ride and both needed a few pounds of air. Took the bike down the road and back about two miles. When I got back to the shop I put the bike on the lift to check a few things and heard what I thought was the tube letting go. I got a new tube, wrestled the tire of the rim, pulled the tube and inflated it.
No holes or leaks,,,, the tube is still inflated in the shop. I think there was air trapped between the tube and the tire and that's what I heard let go.