ww1 bayonet, need identification help!

[BeauHarper]

sorry I am unclear as to what this exactly means? Chatellerault is the place of manufacture correct? But what does the AC prefix stand for?
Thanks so much,
Beau

[Jim P]

sorry I am unclear as to what this exactly means? Chatellerault is the place of manufacture correct? But what does the AC prefix stand for?
Thanks so much,
Beau

The prefix's A,B,C,D,E,AB and AC were used by Chatellerault to show that they were the manufacturers of that particular bayonet.

Hope that helps,
Jim

[AndyB]

The AC letter preffix speaks for production of the carbine, it must not directly means the bayonet is too Chatellerault production but in majority case probably yes, the AC series is already the reworked M1892/M16 carbine, so date of production of the serial numbered carbine is late WW1.