
Undated
BG
The source dates this example ca 1970-1977; this is an observation, not a documented mark-use interval.
Pottery & porcelain · a closer look
The source dates this example 2009; this is an observation, not a documented mark-use interval.

Undated
The source dates this example ca 1970-1977; this is an observation, not a documented mark-use interval.

Undated
The source dates this example 2009; this is an observation, not a documented mark-use interval.

Undated
The source dates this example ca 1970-1977; this is an observation, not a documented mark-use interval.