K11 serial number

[Patrick Chadwick]

Aragorn is correct. You have a "Kurzgewehr 00" a.k.a. K00 = Short Rifle Model (19)00
Made in 1905 (1905 serial numbers were 7801 - 9300)
Most of these were later converted to the K11 configuration, without altering the numbers, and were then designated K00/11 - so the information from the seller was half-right. It ought to take the GP11 ammo.*** If reloading, rather go for a lighter load out of respect for your shoulder and an old mechanism!
I recommend that you somehow manage to post a photo, so that we can all be quite sure what you have.


***But absolutely nobody, especially me, is going to guarantee that! GP11 ammo was rated at 45000psi. the older GP90 at 38000psi.