This mark is found on souvenirware and decorative plates. Their production period can be confirmed by dated examples from 1988, 1989, 1990 and 1993. Although it took some time, it was eventually confirmed that this off-brand series was produced by the Rosenthal AG.

M190815a
Crown above pair of lions flanking crossed roses, "EXCLUSIV PORZELLAN", "SELB" and "BAVARIA".

M190815c
This version includes crossed swords instead of roses and comes with the addition "ECHT GOLD 21 KARAT".