Chipping Sodbury Stamps

We picked these stamps up at an auction a few years ago.  We have never been able to find out much about them - we think they must have been specially printed for Chipping Sodbury as they have "not issued by the post office" on them.  We went out with Amanda and Mr T for breakfast this morning and then into Clifton Cameras with them for a one on one demo.  This was interesting.
A we windy day today