In Dr. seegers book is shown a galilean binocular in picture No. 7. (abb. 7)
The same binocular has been used in the danish army up until 1943!
Below are some pictures of two of these binoculars.
One has been in use by the german army, and the other one by the danish army.

Danish version to the left, german version to the right. Both complete with original holsters.

German model with regimental marking. The marking is german, but the position is somewhat unusual.

According to the Stempelungsvorschrift, it should be on the bridge, like on the danish version

Markings of the german binocular and on the outside of the holster. Production date for the holster is 1892.
And as everyone know, the 26th regiment (Prince Leopold of Anhalt-Dessau) is part of 7th Division, 4th army Corps, in Magdeburg. ( Well, I have to admit, I looked that up myself, too)
The AWS marking may be a predecessor of the AWM in München. At least the AWM is known to have marked pistol holsters, just like this, up to 1918. The precise meaning of the middle number is not known to me.
AWM was a major manufacturer of leather goods for the german, read bavarian, army up to 1918.

Inside the lid of the holster is a "Gebrauchsanweisung", a manual.

The danish binocular with original holster.

Danish army markings on the bridge. 3. D.R. No. 130. Meaning 3rd. Dragoon Regiment Number 130.
The binoculars for these Dragoon regiments were ordered in 1902 and 1903.
In 1905 similar binoculars were ordered from Busch in Rathenow, through the danish retailer Corn. Knudsen.
I don´t know if Preisler were still in the busines in 1905.

Marked inside the lid: Frederik Preisler København, and on the lid: serial 32 and 111. No, they don´t match, unfortunately, but the lidmarking is definitely danish army marking.
To read the Preisler marking, you need to know, that is what it should be. Besides there is no other Frederik, making instruments at this time.

Just a quick text and some pics....I hope you enjoyed it.