A few years ago, I won an auction for a Winchester Model 54
with a Zeiss Zielklein in a G&H single lever mount. I gave
it to my father and he has hunted with it for two maybe three
deer seasons with it in Wisconsin. He hasn't reported any
problems with it, but hasn't taken it off the rifle all that much nor has he used a rifle with a G&H double lever mount. I wonder if there is any period advertising that discusses the double lever mount and why it was introduced.