Picked up this nice Swift roof prism, a good looking binocular,nice to hold and very well made. Not bad optically, 347ft@1000yds , a tad dark and not the sharpest of images, if compared to the early top German roof prisms of the time,Leitz,Zeiss etc, but possibly the 7x 0r 8x version may be sharper than this 10x. Both binocular and case are mint condition, the only fault was the rubber eye cups, which are quite flimsy anyway, had lost some grip and were loose, I replaced them with some that are more sturdy and a perfect fit, taken from a cheap plastic Miranda binocular.