122 are "Leytonstone Road". The next house is "124 High Road, Leytonstone". In some villages, a single numbering system covers the entire settlement, especially in rural areas without formal street names. In this case the house number is appended directly to the village name in addresses. This often coexists with newer developments within the same village that use street names, e.g. "58 Dorfield" alongside "3 Church Close, Dorfield", although to avoid confusion the older houses may eventually gain street names of their own while keeping their numbers ("58 Axtley Road, Dorfield"). Developers may avoid the number 13 for house numbering as in Iran, because that number is considered by some to be unlucky. Blocks of flats (apartments) are treated in two ways: Flats numbered individually as part of the street. A lintel will typically be embossed or metalled "1–24 Acacia Avenue" or "Flats 1–24 Acacia Avenue". Flats numbered within a building. The building retains its own number (or name) on the street e.g. "Flat 24, 1 Acacia Avenue" or increasingly as commonly: "Apartment 9D, Newhouse Court, 1 Acacia Avenue". Outside the number of flats is discreetly shown or not revealed. Where flats are lettered, this can also be indicated by appending the letter to the building number: "Flat D, 1 Acacia Avenue" may also be "1D Acacia Avenue" (generally only one of these formats will be officially used). In some parts of Scotland, particularly Aberdeen and Dundee, flats in tenement blocks may be numbered as follows; "Flat 3/L, 1 Acacia Avenue". In this numbering system 3 refers to the floor (with G or 0 being used for the ground floor) and L or R indicating whether the flat is on the left or right from the entrance of the block. Marking of numbers In the UK street numbering and street signposts vary across local authorities. Numbering plates (or similar) are overwhelmingly at the discretion of house owners. In the UK fanlights in front doors were introduced in the 1720s in which the house number may be engraved. Contemporary architecture and modern house building techniques see alternatively acrylic, aluminium, or glass, ceramic, brass, slate, or stone used. Southern Europe Italy Italy mostly follows the European scheme described above but there are some exceptions, generally for historical reasons. In Venice, houses are numbered within six named series (one per sestiere district). Similarly, small villages in rural areas may also occasionally use a