manufacturers' labels & marks (I to L)

stylised 'flame' trademark

paper label (gold on black)

metallic label (gold on black)

impressed 'flame' seal

Jaffe Rose (importers), England (1950s - 1960s)

metallic label (purple on gold)

James A Jobling & Co, England (1921 - 1975)

paper label 1930s

engraved on opalescent glass 1930s

engraved on opalescent glass 1930s

moulded mark 1925-53	moulded mark 1953-75	moulded mark on jug with RD No 724094 (registered 20th September 1926)
'Pyrex' labels & marks

Johansfors, Sweden (1891 - 1972)

company logo

Jonasson, Mats (see Målerås Glassworks)

Kastrup Holmegaard, Denmark (established 1965)
Holmegaard (est 1825) & Kastrup (est 1847) merged in 1965

Kastrup moulded mark 1940-65

Holmegaard paper label 1930s

engraved mark (with Per Lutken monogram) post-War

engraved mark (with Per Lutken monogram) dated 1961

Kerr Glass Manufacturing Corporation, USA (established 1903)
(manufacturers of glass jars for preserves, jelly, jam etc)

moulded mark

Kings Lynn Glass, England (1967 - 1969)
(bought out by Wedgwood in 1969 & re-named Wedgwood Glass. Merged with Waterford in 1986, company sold to Caithness Glass in 1988. King's Lynn factory finally closed in 1992)

paper label & acid-etched mark c 1969

acid-etched mark (after Wedgwood buy-out) 1969-86

Kosta, Sweden (1742 - 1976)

metallic label (black on gold) (design by Ellis Bergh) c 1930s - 50s

paper label

Kosta Boda, Sweden (established 1976)
Boda (est 1864) & Kosta (est 1742) merged in 1976

vibro-pen engraved (design by Kjell Engman) c 1980s - 1990s

vibro-pen engraved (design by Bertil Vallien) c 1970s - 1980s

clear plastic label (with enamelled signature of Ulrica Hydman Vallien, on an 'Open Mind' series vase) c 1990s

vibro-pen engraved (design by Anna Ehrner) c 1980s - 1990s

vibro-pen engraved (design by Ulrica Hydman Vallien) c 1990s

vibro-pen engraved (design by Kjell Engman) c 1980s

Wilhelm Kralik Söhn, Bohemia (1881 - 1938)

metallic label (gold on cream)

Thanks to excellent research by Alfredo Villanueva (see his website for the original photos) it has been established that the marks below were used on pieces (mainly 'Tango' glassware) known to be from the Kralik glassworks, during the 1920s-30s. They are usually acid-etched, but those on the top row are also known to have occurred printed in dark enamel colours. In the case of the curved marks, the curvature may vary from that shown

English spelling, straight line

French spelling, straight line

alternative French spelling, straight line

English spelling, curved

English spelling, curved capitals

French spelling, curved capitals

French spelling, straight line capitals

French spelling, two-line capitals

Lalique, France (established 1909)
It is practically impossible to date individual Lalique marks, except to say that, in general, marks using the initial R. are pre-1945 (there are exceptions, and on small items where there was limited space, the initial was not used)
N.B. The ® on modern pieces (shown in the illustration at bottom, right) is an international mark which shows that the name 'Lalique' has been registered as a trademark. It should not be confused with the R. on pre-1945 pieces, which represents Lalique's first name 'René'

relief- or intaglio- moulded mark

intaglio stamped mark (on early pieces)

stencilled sand- blasted mark

relief- or intaglio- moulded mark

relief- or intaglio-moulded mark (with or without "R" or "FRANCE")

wheel-cut mark (with or without "FRANCE")

relief- or intaglio- moulded mark

wheel-engraved

engraved script mark

engraved script mark

engraved script mark

engraved script mark

engraved script mark

wheel-engraved

wheel-engraved

engraved script mark

modern laser-etched mark (note the use of the ®, which is not found on earlier pieces)

moulded mark 'VDA' for Verrerie D'Alsace (used briefly from 1921, with or without 'FRANCE')

Siddy Langley, England (established 1988)

engraved signature 1990

Vereinigte Lausitzer, Germany (late 19th C - ?)

moulded mark on pressed glass c 1910 to 1935

moulded mark on pressed glass 1936 to 1947

moulded mark on pressed glass 1948 to 1968

cameo signature 'Arsale' or 'Arsall' c 1918 to 1929

cameo signature 'Arsale' or 'Arsall' c 1918 to 1929

Peter Layton, England (established early 1970s)
(founded London Glassblowing Workshop in 1976, Peter Layton & Associates in 1993)

engraved signature 1978

engraved signature c 2000

Lednické Rovne, Slovakia (20th Century)

paper label

Leerdam, Holland (established 1878)

K P C de Bazel (several variants) 1916-47

Hendrick P Berlage 1923-34

Lucienne Bloch 1928-?

Andries Dirk Copier 1914-67

C C van Asch-van Wijk 1929-32

Ida Falkenberg- Liefrinck 1930s

William Heesen 1943-

Anthonius Johannes van Kooten c 1930-

Christiaan Johannes Lanooy 1919-30

Christiaan Johannes Lanooy 1919-30

Joep Nicolas 1930s-45

Floris Meydam 1935-50s

Cornelis de Lorm 1916-25

Frits Lensfeld 1926-30

Chris Lebeau 1924-25

Jules Vermeire 1930-32

logo on paper label 1919-25

logo on paper label 1925-28

logo on paper label 1928 onward

moulded mark 1970-

partial paper label 1928 onward

moulded mark on 'Madonna & child' (design by Stef Uiterval) 1930s

Legras & Cie, France (1864 - 1914)

'Mont Joye' gilt or enamelled

enamelled, acid-incised mark

enamelled mark

enamelled, acid-incised mark

enamelled cameo mark

Libbey Glass Co, USA (established 1888)

acid-etched 1896-1906

moulded mark

moulded mark (year number on left)

moulded mark

acid-etched

acid-etched

acid-etched

Lindshammar, Sweden (20th Century)

paper label

Liskeard Glass, England (1978 - 1983)
(name changed to Merlin Glass in 1983)

relief-moulded 'seal' 1978 - 1983

J & L Lobmeyr, Austria (established 1822)

incised, gilded or acid-etched

paper label c 1925 onwards

metallic label, gold on black

black-enamelled

Loetz, Bohemia (1851 - 1939)

wheel-incised after 1891

wheel-incised (designed by Max von Spaun) after 1870

wheel-incised

in gilt on base (design by Milla Weltmann) c 1914

mark acid-etched, name wheel-incised (either Loetz, Spaun or Austria)

partial paper label on Loetz 'Marmorierte' vase (red on white) - probably French retailer

acid-etched c 1920s on 'Tango' glassware

acid-etched (on late productions)

acid-etched (on 1930s productions)

Note: The Loetz oval mark shown above should not be confused with the unidentified Czech marks shown below, which contain the additional words 'Made In'

acid-etched c 1920s -30s

acid-etched c 1920s -30s

Jean Luce, France (1920s - 1930s)

sand-blasted c 1925

Lundberg Studios, USA (established 1973)