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There are 3114 manhole covers that belong to category Unknown: Show on map Thumbnails mode
1926 Mount Pearl, NL - Cover made by IMP Castings
1927 Warsaw - a round cover with a background of squares and a symbol in the center
1928 Salford - Round lid made by Thomas Dudley
1929 Warsaw - a cover with a background consisting of striped squares
1930 Copenhagen - a lid with circles in the center from which rays come out
1931 Copenhagen - A cover with a network of circles (2)
1932 Warsaw - Concrete cover with a metal frame, crossed by metal strips and a flower in the center
1933 Copenhagen - a lid with a star in the center and circles of squares around it
1934 Manchester - BRUNEL - diagonal
1935 Warsaw - round cover with squares (14)
1936 Warsaw - a BRIO cover
1937 Copenhagen - Lid manufactured by Niemisen Valimo
1938 Drammen - cover and on it major sites in the city (2)
1939 Warsaw - lid made by a Turkish factory
1940 Copenhagen - a lid with a star in the center and circles of squares around it (2)
1941 Warsaw - Wilanów Palace Museum
1942 Copenhagen - A cover with a network of circles (3)
1943 Warsaw - a cover that resembles a car steering wheel
1944 Manchester - Old lid made by Baxendales & Co with rhombus background and one handle
1945 Copenhagen - A cover with a network of circles (4)
1946 Manchester - background consisting of the letters H tilted
1947 St. John’s, NL - ancon cover
1948 Stockholm - Lid manufactured by Pipelife International
1949 Manchester - concrete cover with short diagonal grooves
1950 Pisa - Quadro 40
46 Wellington Crescent, Mount Pearl, NL A1N 2E2, Canada
Aleja Wincentego Witosa 31/lok 3A, 00-710 Warszawa, Poland
3 Crescent, Salford M5 4PF, UK
Agrykoli 1, 00-460 Warszawa, Poland
Admiralkaj, Toldbodgade, 1253 København, Denmark
Nyhavn 1F, 1051 København, Denmark
Piękna 22a, 05-075 Warszawa, Poland
Sankt Annæ Pl. 4, 1250 København, Denmark
Aquatics Centre, Manchester M13 9SS, UK
Wąwozowa 36, 02-796 Warszawa, Poland
Kadetów 44, 03-987 Warszawa, Poland
Sankt Annæ Pl. 6, 1250 København, Denmark
Øvre Torggate, 3017 Drammen, Norway
aleja Dzieci Polskich 7, 04-730 Warszawa, Poland
Sankt Annæ Pl. 20, 1250 København, Denmark
Stanisława Kostki Potockiego 14, 02-958 Warszawa, Poland
Nørre Farimagsgade 64, 1364 København K, Denmark
Elektoralna 8/10, 00-139 Warszawa, Poland
80 Oxford St, Manchester M1 5NH, UK
Nørregade 80, 1358 København, Denmark
70 Oxford Rd, Manchester M1 7EF, UK
37 Anderson Ave, St. John’s, NL A1B 3E4, Canada
Sveavägen 42, 111 34 Stockholm, Sweden
70 Oxford Rd, Manchester M1 7EF, UK
Via dell’Aeroporto, 48, 56100 Pisa PI, Italy
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