Nynehead had a "NYNEHEAD / WELLINGTON, SOM." Type Ic handstamp issued in September 1897, followed by a "NYNEHEAD / WELLINGTON / SOM." Type 2 handstamp which is known used from August 1922. The example below are from June 1922 (so being the earliest date known) and October 1924.
Coxley had two "COXLEY / WELLS" Type Ib handstamps issued in August 1889 and in March 1894. This was followed by a "COXLEY / WELLS, SOM." Type Ic handstamp knwon used from April 1904 and then a "COXLEY / WELLS / SOMERSET" Type 2 handstamp known from November 1921. The example below is from July 1920 so brings the date forward.
Henton had two "HENTON / WELLS. SOM." Type Ic handstamps, the first issued in October 1890 and the second known used from April 1914. These were followed by a "HENTON / WELLS / SOM" Type 2 handstamps known used from January 1921 and by a "HENTON / WELLS / SOMT" Type 2 handstamp known used from May 1929. The example below is of the first of the two Type 2 handstamps, dated February 1921.