I've got one on a bike too, bought it from a list member back in 2021.
Will mentions the no-tombstone R-14 in a newsletter back in 2020 and talks about cutting off tombstones on racks. So that's always an option if you can't find the version you're after.
This picture and specifically the old-version R-14 rack on the back reminds me of something I wanted to put in an email update: If you're having trouble putting a saddlesack onto a rack with a tombstone (that pretty rounded piece on the frame-side of the rack), it's OK to cut it off. I did exactly that to my basket rack so I could push the basket closer to the headtube for slightly better handling.
We used big bolt cutters and filed the sharp edge smooth.
Danny