I am green with envy mrwinkle. That is a beautiful example. That would have been right at home in my Boker collection!!

I can't give you any definitive date of production. The spine work is the same as on one of mine - Good as Gold. This photo doesn't show the spine work though.

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From looking at the scales of yours, comparing those with adverts from early catalogues, my best guess would be somewhere around 1920, give or take a few years! Sorry I can't be more exact.