Model 1867 OR's Unit Markings

[Steve Nick]

I've had this Metalhelm for many years and posted it a while back.

I was researching Kurassier helmet markings today and on a whim I decided to remove the Prussian Korarde to see if I could find a stamp of some sort. The helmet to this point showed no markings anywhere. Not even a size stamp.

Surprise, surprise! There are some marks but I can't decipher them beyond the "3" potentially denoting the 3rd Regiment.

Any thoughts as to what these markings signify?

 

[Pontiac9999]

I like how they used the number 1 as the fraction bar....!

 

[J.LeBrasseur]

lot #???

 

[Steve Nick]

I like how they used the number 1 as the fraction bar....!

22 3/4??

 

[Pontiac9999]

22 3/4??

That's what I think it says....however I could be wrong....