Keynsham - Double Circle Double-Arc cancels

In December 1913 Keynsham was issued with another "Dulwich" cancel, this time "KEYNSHAM / BRISTOL". This handstamp has medium-thick arcs and is currently known used from 1913-1929.

A different "Dulwich" cancel with thicker arcs is known used from 1936-1962.

A final type of double circle double-arc cancel with line arcs is known as a "Birmingham" type after the first place to be issued with this type.  The Keynsham cancel is currently known in use from 1963 to 1975 - both these examples are on misrouted mail.