Just to add to the thread:- my example is a Patt 11 and dated 11/16. Underneath the pommel is stamped 25MX over 477. Any ideas?
The grips have only the acceptance mark of a crown over 4.
The blade tip seems to have been lightly re-profiled - the curve is flatter than the "uncut" examples posted but nothing like the almost straight line of the "cut" versions.
The scabbard is stamped Mk 1, nothing else is legible.
One thing missing is the frog. As the likelyhood of finding an original is virtually nil, does anyone know of a source of reproductions?