The long and the short of it. The last 2 insulators, again, suggested by the seller that they might be from Norway, but the markings on the firing rest tops cause me to believe they are from Sweden. I am seeking confirmation of this, and any other possible information Thanks for taking the time to look at all these pictures, and any comments appreciated. I will also work on focus and detail improvement for the next time around. Got a good camera, just got to bring the operator up to snuff

Again, thanks to Fredrik Hojefalt, these are confirmed as Swedish production. Both insulators are marked IFO 52 indicating they were produced by IFO and both were manufactured in 1952