Leerdam
marks
most common Acid etch marks
= Andries D. Copier, 1901-1991
(sandblasted mark 2 in use 1945-1948)
= Andries D. Copier,
1901-1991
= K.P.C.de Bazel (1869-1923)
= H.P. Berlage (1856-1934)
= Chr. Lanooy (1881-1948)
= Chr. Lebeau (1878-1945)
= L. Bloch (1909-1999)
= Cornelis de Lorm
(1875-1942)
= W.J. Rozendaal (1899-1971) for
Kristalunie, Maastricht
Yearletters
Leerdam Unica '27-48
|
Yearletter |
Number of pieces made |
Year |
|
A |
Unknown |
1927/8 |
|
B |
Unknown |
1929 |
|
C |
Unknown |
1930 |
|
D |
Unknown |
1931 |
|
E |
Unknown |
1932 |
|
F |
457 |
1933 |
|
G |
446 |
1933/4 |
|
H |
712 |
1934 |
|
K |
530 |
1935 |
|
L |
475 |
1936 |
|
M |
446 |
1937 |
|
N |
277 |
1937 |
|
O |
662 |
1937/8 |
|
P |
111 |
1939 |
|
R |
189 |
1940 |
|
S |
789 |
1941 |
|
T |
312 |
1942 |
|
V |
1273 |
1943 |
|
W |
1841 |
1944 |
|
X |
1750 |
1946 |
|
Z |
647 |
1947/8 |
|
|
|
|
Unica using these year letters are most likely made by
A.D. Copier, Chris Lebeau or C.J. Lanooy.
A - numbers:
A1, A2, A3 etc. up to A910 were used for cut, etched
and engraved pieces made in the Leerdam glass school between 1944 and 1950
after designs of Floris Meydam.
A911 up to A1307 were used between 1950 and 1962 for
"Abstract compositions", small pieces designed by Floris Meydam or
Willem Heesen.
A1317 up to A1336 were made between 1971 and 1975. No
more pieces with a single A-numbering were made after 1975.
Yearletters
Leerdam Unica '51-86
|
Yearletter |
Number made |
Year |
|
AC |
75 +/- |
1951 |
|
AD |
520 +/- |
1952 |
|
AE |
860 +/- |
1953 |
|
AF |
620 +/- |
1954 |
|
AH |
980 +/- |
1955 |
|
AM |
1500 +/- |
1956 |
|
MA |
3003 |
1957 |
|
MB |
1679 |
1958 |
|
MC |
1397 |
1959 |
|
MD |
742 |
1960 |
|
ME |
645 |
1961 |
|
MF |
902 |
1962 |
|
MH |
247 |
1963 |
|
MK |
396 |
1964 |
|
ML |
496 |
1965 |
|
MO |
573 |
1966 |
|
MP |
166 |
1967 |
|
MR |
283 |
1968 |
|
MS |
211 |
1969 |
|
MT |
469 |
1970 |
|
MV |
135 |
1971 |
|
MW |
164 |
1972 |
|
MAA |
28 |
1973 |
|
MAB |
149 |
1974 |
|
MAC |
269 |
1975 |
|
MAD |
241 |
1976 |
|
MAE |
229 |
1977 |
|
FM78 |
143 |
1978 |
|
FM79 |
189 |
1979 |
|
FM80 |
348 |
1980 |
|
FM81 |
264 |
1981 |
|
FM82 |
47 |
1982 |
|
FM83 |
39 |
1983 |
|
FM84 |
125 |
1984 |
|
FM85 |
181 |
1985 |
|
FM86 |
|
1986 |
|
|
|
|
Unica signed with the year letters up to 1978 are most
likely made by A.D. Copier or F.Meydam. From 1978, the initials of the designer
and year of manufacture are indicated.
UB Marks
209 pieces with a UB mark were made between 1957 and
1961. UB stands for decorated unica.
|
From |
To |
Year |
|
UB1 |
UB11 |
1957 |
|
UB12 |
UB106 |
1958 |
|
UB107 |
UB149 |
1959 |
|
UB150 |
UB193 |
1960 |
|
UB194 |
UB209 |
1961 |
|
|
|
|
LL Marks
Pieces with a LL (Ligne Libre) number have been made
between 1959 and 1976. The designer's name should be included - most was
designed by Meydam.
|
|
|
Year |
|
LL 1 |
60-59 |
1959 |
|
LL 1 |
834-60 |
1960 |
|
LL 1 |
64-960 |
1960 |
|
LL 1 |
41-1060 |
1960 |
|
LL 1 |
7-1260 |
1960 |
|
LL 1 |
17-1660 |
1960 |
|
LL 1 |
12-1760 |
1960 |
|
LL 1 |
13-1860 |
1960 |
|
LL 1 |
4-1960 |
1960 |
|
LL 1 |
77-2060 |
1960 |
|
LL 1 |
8-2160 |
1960 |
|
LL 1 |
12-2260 |
1960 |
|
LL 1 |
24-2360 |
1960 |
|
LL 1 |
115-61 |
1961 |
|
LLM 1 |
114-62 |
1962 |
|
LLM 1 |
377-63 |
1963 |
|
LLM 1 |
101-64 |
1964 |
|
LLM 1 |
53-65 |
1965 |
|
LLM 1 |
165-66 |
1966 |
|
LLM 1 |
265-67 |
1967 |
|
LLM 1 |
191-68 |
1968 |
|
LLM 1 |
59-69 |
1969 |
|
LLM 1 |
161-70 |
1970 |
|
LLM 1 |
135-71 |
1971 |
|
LLM 1 |
196-72 |
1972 |
|
LLM 1 |
67-73 |
1973 |
|
LLM 1 |
42-74 |
1974 |
|
LLM 1 |
45-75 |
1975 |
|
LLM1 |
357-76 |
1976 |
LEM Marks:
Limited Edition numbers in use since 1973. The
numbering refers to quantities produced - not to year of creation. Designer:
Floris Meydam.
|
Number |
|
|
|
LEM 16-50 |
Number 16 |
Out of 50 |
Serica Marks:
Meydam Serica after 1978, production quantity,
sequence number, initials
|
Royal Leerdam |
|
|
|
50-48 FM |
Number 48 |
Out of 50 |
Glassblowers- and
engraver's initials:
Found after yearletter and -number, mostly after 1959
|
Initial |
Name |
From year |
|
H |
Den Hartog |
1931 |
|
K |
Keuken |
1927 |
|
LL |
Van der Linden |
1936 |
|
L |
Van Lopik |
1948 |
|
VO |
Van Opijnen |
1940 |
|
W |
Verwoerd |
1937 |
|
K |
Feodor Kaebisch |
1941 |
|
V (PV) |
Vermeer |
1939 |
|
.vl |
Van Ingen |
1937 |
|
O |
Den Ottelander |
1941 |
Designers which have been known to work for Leerdam
Chris
Agterberg, 1883-1948
C.C.
van Asch van Wijck (1900-1932)
K.P.C. de Bazel (1869-1923)
H.P.Berlage (1856-1934)
Lucienne Bloch (1909-1999)
Andries
D. Copier (1901-1991)
Ida
Falkenberg-Lieferinck (1901)
Jaap
Gidding (1887-1955)
Dom
Gregorius de Wit (1892-1978)
Wim
Harzing (1898-1978)
Willem
Heesen ()
J.
Jongert (1883-1942)
Chris
Lebeau (1878-1945)
Frits
Lensfelt (1886-1945)
C.A.
Lion Cachet (1864-1945)
Chris
Lanooy (1881-1948)
Cornelis
de Lorm (1875-1942)
Floris
Meydam (1919)
Joep
Nicolas (1897-1972)
R.Srebelle
(1880-1959)
Wim
Stuurman (1908)
Stef
Uiterwaal (1889-1960)
S. Valkema ()
Jules Vermeire (1885-1977)
Frank Lloyd Wright (1868-1959)
Designers
which have been known to work for Maastricht
Ed
Cuypers (1859-1927)
Jan
Eisenloeffel (1876-1957)
H.
Kannegieter (1898-1991)
Jan de
Meyer (1878-1950)
W.J.
Rozendaal (1899-1971)
Piet
Zwart (1885-1977)
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