Syncopated perfs

Syncopated perfs or syncoperfs, are a deliberate pattern of interrupted lines of perfs. The most famous are those of the Netherlands in 4 different styles, used from 1927 to 1933 on some definitives and a number of semipostal sets, issued alongside "normally" perforated stamps. They were originally made this way to prevent them breaking apart when made into coil strips and sold.

 File:Netherland 40c synco.jpg|Netherlands 40c from the 1928 syncoperf series. File:Netherlands 6c semi synco.jpg|Netherland 1929 6c semipostal block showing a different style of syncoperf from the stamp at left. File:Great Britain L2 Castle.jpg|Great Britain used this style on several issues starting with the Castle high values in 1992. 

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