I'd bet that it was branded on before the material of the figure was fully cooled. There were probably so few of these made that it wouldn't make sense to use a separate mold.
Sorry Fkro6784 but why you say there were so few of these?? The writings on the back of packs talks clear:
"Hidden in one of every 10.000 Matchbox Monster In My Pocket packages, is a secret monster which has a special star branded on it´s back (*) instead of the usual point value."
They just talk about ONE Secret Monster, hidden in one of every 10.000 packages
Edited by GormTransMonsters, 05 December 2014 - 02:33 PM.