Lithgow Bolt/Body Assemby Numbers

[Lance]

Does anyone know when Lithgow started the assembly number system on the bolt and body flat?

Thanks!

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[Homer]

Was 1918

[muffett.2008]

Yep, but with the start of the A prefix.

[Homer]

Yep, but with the start of the A prefix.

Yes that’s right Muffer

[Lance]

Thanks, my 1918 body, 1919 barrel III* has "L" assembly prefix. Obviously, my 1916 lacks the assembly so I assumed it was somewhere in between, but it best to ask the experts!