I simply observed the object and compared it with the invoice of my two opera binoculars and some models very similar to those of the OP found on the net, which marked those years (40-50s). So, the time of manufacture "around 40-50s of the twentieth century" is definitely wrong. the opera glasses are definitely much older than "around 40-50s of the twentieth century". So, the time of manufacture "around 40-50s of the twentieth century" is definitely wrong, Most of the opera glasses with the mother of pearl decoration have been manufactured in France, and lots of them rebranded outside of France, like in Germany and elsewhere.įinally, the details of the focusing mechanics differ from how it has been made "around 40-50s of the twentieth century". The mother of pearl decoration is typical for the Belle Époque, with a revival after WWII and with the imports from the Far East until nearly recent times. This fashion has been more typical for the French opera glasses, otherwise also found on some Austrian opera glasses from around 1900 (Waldstein triplet opera glasses), on the English Dollond Galilean binos from the time shortly after 1900, the both also in my collection.
The pic shows the brass coated to evoke the golden look. The oldest type of these leather cases have a wooden frame (Plössl, Rospini), later the frame has been made from a thin metal band. This type of case has been manufactured since around 1868, as documented with the case for my Plössl opera glasses from the times when the Plössl's company has been run by Rospini in Wien. Then the opera glasses are definitely much older than "around 40-50s of the twentieth century".
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