CP Goerz Berlin S.F. 14 G. #5147 and #479081 Felda IX 17 green periscope telescope binoculars artillery military WWI German. Here is a RARE model of the Goerz S.F. 14 G. with two serial numbers 5147 (the lowest I've ever seen) seen from behind on the upper left of the periscope and 479081 seen from the front on the lower left of the periscope. It is a German "Rabbit Ear" field periscope from Berlin from WWI. Looking into the periscope the image is clear and bright. The lenses and internal prisms are clear and clean, have No mold, No scratches, No haze, No dust. The index with the reticle inside the lenses is in perfect condition. The focusing of the two eyepieces works perfectly. The bubbles for positioning the telescope work perfectly. The weight is 8 kg.