M251001a
"DRESDEN RICH" above two crossed lines flanked by "C" and "L", all above "MADE IN GERMANY".
The two examples of plates that I found were indeed decorated with Dresden-style florals, albeit via transfer rather than hand-applied. One of the plates was incorrectly attributed to "Winterling Oscar Schaller", which is of course nonsense.
M251001a
"DRESDEN RICH" above two crossed lines flanked by "C" and "L", all above "MADE IN GERMANY".