Interesting...An artillery notch in the receiver, but the barrel flange extends beyond the notch...I don't think I've seen that before...
Definitely not a restoration...
I am certainly no expert
(I would defer to Albert on this example) but the condition of the metal around the death's head graphic appears consistent with the rest of the gun...the 1918 font looks...different...
I like it...I think I may bid on it...
Thank You, Marc!