  The reactions pp -> pf (X0) ps, where X0 is observed decaying to eta etaprime
and etaprime etaprime, have been studied at 450 GeV/c. This is the first time
that these channels have been observed in central production and only the
second time that the etaprime etaprime channel has been observed in any
production mechanism. In the eta etaprime channel there is evidence for the
f0(1500) and a peak at 1.95 GeV. The etaprime etaprime channel shows a peak at
threshold which is compatible with having JPC = 2++ and spin projection JZ = 0.
