M110802a
Crowned cassette with "ROYAL" placed above the letters "L B"; all set above "BAVARIA".
These unidentified marks can be found on items made by the Porzellanfabrik Arzberg (Arzberg), Heinrich & Co. (Selb), Paul Müller (Selb), Rosenthal AG (Selb), and the Bohemian EPIAG. As you can see, the last mark is quite different. I included it because of the basic similarity between the two marks and the items on which they were found.
M110802a
Crowned cassette with "ROYAL" placed above the letters "L B"; all set above "BAVARIA".
M110802b
Crowned cassette with "ROYAL" placed above the letters "L B"; all set above "BAVARIA".
M110802c
Cover-up version: crowned cassette with "ROYAL" placed above the letters "L B"; all set above "BAVARIA".
M110802d
Cover-up version: crowned cassette with "ROYAL" placed above the letters "L B"; all set above "BAVARIA".
M110802e
Crowned shield with "ROYAL" placed above the letters "L B"; no country of origin indicator.