Zoom binoculars - 1850-1900 - 德国 - Jacob Sachs-Hof Optiker

presenting a particularly well-preserved theater glass by the German optician Jacob Sachs, Köln and Berlin.
Jacob Sachs (often written Jakob Sachs) was a well-known German court optician who produced high-quality optical instruments in the late 19th and early 20th centuries.
He was also appointed court optician!
The addition “Hofoptiker” (or Hof-Optiker) was a title of distinction. It meant that Jacob Sachs was an official supplier to a princely, ducal, or royal house (often the Prussian or a regional Rhineland noble house). This title then stood for the highest artisanal precision, excellent glass quality, and fine mechanics, which is why his pieces remain popular with collectors to this day.
Antique pieces from his workshop are now popular collectibles in the Vintage Optics and Arts & Crafts category.
Typical antique products from Jacob Sachs
From historical workshops such as Jacob Sachs’ workshop, especially noble theater and sight instruments have endured:
Opera glasses and theater glasses: These were usually made from noble materials such as mother-of-pearl, brass, aluminum, or leather.
Here the tubes and eyecups were wrapped with celluloid or bone—very fine workmanship and without cracks!

The characteristic fine lines (Schreger lines) in the material point to real bone. Very beautiful cream color.

Minimal, barely perceptible indentation on one of the lower lenses – metal.

No mushroom contamination!
Clear view.

Dimensions:

Height: 8
Width: 10
Depth: 4

all approximately in cm

This beautiful specimen should appeal to many collectors and enthusiasts.

Dear buyers!

All information has been provided to the best of my knowledge.
I generally strive for an exact and precise description.
My description is often based on historical research and intensive investigations!

If, contrary to expectations, an item does not meet your expectations, I kindly ask for your feedback.
There is a mutual solution for everything!

With kind regards

Fred

FROM A CURRENT OCCASION!

PLEASE ONLY BID IF YOU ARE WILLING TO PAY!
YOU ARE ONLY HURTING YOURSELF; OTHER INTERESTED PARTIES AND ALSO ME!
PLEASE FIND A MEANINGFUL HOBBY INSTEAD!

Please ensure correct address details!
And track your purchase with the provided tracking number.
If you are not present at delivery, please provide the carrier with a neighbor or an access point for delivery!
The costs for returns and re-shipment are entirely at your expense!
Please avoid this.

Please ensure correct address details!
And track your purchase with the provided tracking number.
If you are not present at delivery, please provide the carrier with a neighbor or an access point for delivery!
The costs for returns and re-shipment are entirely at your expense!
Please avoid this.

Shipping is conducted individually, depending on the country, with
UPS-DHL-EXPRESS!
No shipping to war zones!!!
The costs also include packaging.
Double carton, bubble wrap, drainage and Styrofoam, if needed.
Recycled cartons, for the sake of the environment
Additional tape labeling: Glass Fragile! To enable safe shipping.
Additional transport insurance, against loss or damage!
Fast express shipping for quick receipt.
Please consider this when bidding!
Thank you!