Unit stamp help

[Fritziii]

Found a nice M1898 quilback Erfurt saw back bayonet this morning, need some help in determine the unit, thoughts? Thanks

Fritz

[Fritziii]

Here's a couple more pics of the bayonet spine is stamped crown W 12,

Fritz

[Fritziii]

2

[Fritziii]

3

[Fritziii]

Last one, it was made by Erfurt

Fritz

[sb98]

I'm not sure of the unit structure, but I think it's either 1st Garde Grenadier Reserve Regiment weapon #22 if there's no "." between the 2's. If there is a "." it looks like 2nd company weapon #2.

[GWA]

The second "2" is 2/3rd the size of the first which indicates 2nd company, weapon 2.

[Fritziii]

Thanks gents!

Fritz