XXXX/XX   XXX   XXXX/XXR
Debossed/Incised/Embossed marks
1945-1989?

The most common base mark is the form number and the size in cm divided by a slash "/". Some forms only comes in one size and are only marked with the form number. This base mark can be found with all known labels from the end of the 40s to the 80s. Some few forms have a letter added after the size number. Here is the form 1514/19R shown. Most common are debossed base marks but embossed marks are also used. Most pieces with emobossed base marks commes with the triangular shaped labels used 1960-1969.  Incised base marks can be found on very early pieces and on hand thrown pieces.

1964 - 1969?

1970 - 1974

 XXX     XXX 
 XX       XX
Debossed/Embossed mark
1945 - 1989?

Base marks with form number above the size number are common on pieces from the 40s, 50s and the early 60s. After that this base mark was used occasiounally, probably when there was limited space. Sometimes there is a horisontal line between the numbers. Both debossed and embossed marks were used.
 

1964 - 1969?

1970 - 1974?

GERMANY
XXX/XX       XXX         XXX       E
                         XX                         1

Debossed, embossed and incised marks
1945 - 1959?

The base mark "GERMANY" added to the form and size number can  be found with labels used until 1959.  Both debossed  and embossed marks were used. Incised marks were also probably used on the most early pieces. An unusual form and size number " E1 " also comes with the mark "GERMANY". This mark is also listed in the catalog from 1957. In the same list is the form and size number "D6".  

Made i. W. Germany
XXXX/XX
1970 - 1989?

This base mark comes with the two last labes that were used from 1970-1990? The base mark is not very common and is likely only used on a few new forms that were introduced during this period.

Ü
handmade
Made in Germany
1989-1990?

This base mark is known on a few forms that are handmade. These vases are not known with any label. Since the base mark text is "Made in Germany" it is likely that they were made after the reunion of Germany in late 1989.  The company got bankrupcy in 1990 so this series of  vases is probably the last one the company produced.