Very rare early m/1896 bayonet with a 4 digit serial number, matching on blade and guard, 9431.
The locking button was replaced some time after 1906 to a conical button.
Regimentally marked 4 company I17 No 19
G to G- condition.
The serial number of the first 10000 bayonets made in 1897 were numbered sequential 1 to 9999.
After that they just had a three digit wrapped number.