there appear to be two identical label scans of the A side with the push-out centres - the only apparent difference is the alignment of the four "prongs".
My copy appears identical to the one uploaded by "RoyWood49", although the B side has the letters K & T on opposite sides of the centre hole, similar to solid centre issue B side.
Matrix Nos. are:
A side 7XCAR 6934-1 With KT opposite.
B side 7XCAR 6935-1 With KT opposite.