Squared-circle postmark
Encyclopedia
A squared-circle postmark is a type of postmark
Postmark
thumb|USS TexasA postmark is a postal marking made on a letter, package, postcard or the like indicating the date and time that the item was delivered into the care of the postal service...

 that surrounds the circle of town and date with a set of concentric arcs forming a square outline.

They were introduced in the United Kingdom
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 in late 1879 as an alternative to the duplex cancel
Duplex cancel
A duplex cancel was a hand stamp used to cancel postage stamps and imprint a dated postmark applied simultaneously with the one device. The device had a steel die, generally circular, which printed the location of the cancel, together with the time and date of cancel...

s, which were somewhat larger and more cumbersome to use. The additional arcs constituted the "killer" that marked the stamp as having been used. They declined in use from the 1910s, when new types of cancelling devices became available, and disappeared by the 1930s.

Three major types were used:
  • Type 1, the first used, has three arcs between the circle and outer corner triangle
  • Type 2 has two arcs, and heavier corner triangles
  • Type 3 has one arc


In all cases, the name of the town or village was curved along the inside top of the inner circle, with a time of day (plaintext or coded, using several systems), and date underneath.

The squared circles came to be used in hundreds of towns in England
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 and Wales
Wales
Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

 (though not Scotland
Scotland
Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

 or Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

), resulting in a total of about 4,000 distinct types. They were also used in a number of colonies of the British Empire
British Empire
The British Empire comprised the dominions, colonies, protectorates, mandates and other territories ruled or administered by the United Kingdom. It originated with the overseas colonies and trading posts established by England in the late 16th and early 17th centuries. At its height, it was the...

. Similar postmarks were also used in Italy
Italy
Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 at around the same period.

Today some postal authorities still use this type or similar markings:
  • Hongkong Post
    Hongkong Post
    Hongkong Post is a department under the Government of Hong Kong responsible for postal services, though operated as a Trading Fund. Founded in 1841, it was known as Postal Department or Post Office before the handover of Hong Kong in 1997...

    , a former British colonial, continues to use this marking.
  • Canada Post
    Canada Post
    Canada Post Corporation, known more simply as Canada Post , is the Canadian crown corporation which functions as the country's primary postal operator...

    used this mark and continues to use it for first day cover cancellations.
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