Agreed it is RPM-017, not RPM-004. Oddly, I just attributed one of each of these earlier today so it's kinda fresh in my head.
On both of these in the later die stages column 12 gets pretty confusing, but column 11 can work to separate them. On RPM-004 the die crack starts high on the right, and then continues mid and lower on the left side of the column.
On RPM-017 it's more just a high lump in the middle and a lower lump in the middle, as on the OP's coin.