For many years I owned a a very fine Guyot 12G hammer gun[Found in Europe].This gun had London proof marks,from the "Not for Ball",era [1875- 1887].There where no French proof marks on this gun. Guyot was very active in the English market during the late 1880,s.For example their guns placed 4th;and 6th in the Hurlingham ,gun club trials of 1897;out performing some well known English makers,ie;Churchill,Purdey,Holland,at the 30 yard mark.
I believe that Guyot either had a shop or agent in England and/or a relationship with a London maker. Efforts to identify their location/ partner in England have thus far drawn a blank.
