Various
The ultimate manhole covers site

There are 2905 manhole covers that belong to category Unknown:       Show on map Thumbnails mode

1926 Warsaw - Concrete cover with a metal frame, crossed by metal strips and a flower in the center
Piękna 22a, 05-075 Warszawa, Poland
1927 Copenhagen - a lid with a star in the center and circles of squares around it
Sankt Annæ Pl. 4, 1250 København, Denmark
1928 Manchester - BRUNEL - diagonal
Aquatics Centre, Manchester M13 9SS, UK
1929 Warsaw - round cover with squares (14)
Wąwozowa 36, 02-796 Warszawa, Poland
1930 Warsaw - a BRIO cover
Kadetów 44, 03-987 Warszawa, Poland
1931 Copenhagen - Lid manufactured by Niemisen Valimo
Sankt Annæ Pl. 6, 1250 København, Denmark
1932 Drammen - cover and on it major sites in the city (2)
Øvre Torggate, 3017 Drammen, Norway
1933 Warsaw - lid made by a Turkish factory
aleja Dzieci Polskich 7, 04-730 Warszawa, Poland
1934 Copenhagen - a lid with a star in the center and circles of squares around it (2)
Sankt Annæ Pl. 20, 1250 København, Denmark
1935 Warsaw - Wilanów Palace Museum
Stanisława Kostki Potockiego 14, 02-958 Warszawa, Poland
1936 Copenhagen - A cover with a network of circles (3)
Nørre Farimagsgade 64, 1364 København K, Denmark
1937 Warsaw - a cover that resembles a car steering wheel
Elektoralna 8/10, 00-139 Warszawa, Poland
1938 Manchester - Old lid made by Baxendales & Co with rhombus background and one handle
80 Oxford St, Manchester M1 5NH, UK
1939 Copenhagen - A cover with a network of circles (4)
Nørregade 80, 1358 København, Denmark
1940 Manchester - background consisting of the letters H tilted
70 Oxford Rd, Manchester M1 7EF, UK
1941 St. John’s, NL - ancon cover
37 Anderson Ave, St. John’s, NL A1B 3E4, Canada
1942 Stockholm - Lid manufactured by Pipelife International
Sveavägen 42, 111 34 Stockholm, Sweden
1943 Manchester - concrete cover with short diagonal grooves
70 Oxford Rd, Manchester M1 7EF, UK
1944 Pisa - Quadro 40
Via dell’Aeroporto, 48, 56100 Pisa PI, Italy
1945 Florence - small square lid
Piazza Lorenzo Ghiberti, 45 R, 50122 Firenze FI, Italy
1946 Florence - ISPEZIONE General Cover
Piazza Lorenzo Ghiberti, 42 R, 50122 Firenze FI, Italy
1947 St. John’s, NL - Silent Knight - diagonal (3)
25 Dunfield St, St. John’s, NL A1A 1W2, Canada
1948 Florence - square cover with arrowheads and 2 handles
Via Giosuè Carducci, 4, 50121 Firenze FI, Italy
1949 Manchester - cap made by Misterton Castings (2)
3 Oxford Rd, Station Approach, Manchester M1 6FU, UK
1950 Paris - a rectangular lid with a background of pegs - Modular
1 R. Bréguet, 75011 Paris, France

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