Here we have an example of a vintage monocular brass microscope by Carl Zeiss of Jena in Germany, bearing production reference number 19755.  The condition of this example is generally very good, with only a few age and use appropriate signs of wear to the finish on the instrument and just the right time worn look to its brass-work.  This example has a nice set of objective lenses by Zeiss and Leitz may well therefore be quite a sought-after classic model in view of the quality manufacturer, good optics and the instrument's provenance confirming thatthis example was donated to a hospital in the mid-1930s.

The silver-plated presentation plaque on the horseshoe foot reads as follows:

"Given in memory of a beloved grand-daughter
Sheila Stuart Mallinson (1917 - 1934)
who was to have been a student at this hospital"

Turning to the main technical details of this quality monocular microscope, we have the following:

1)  A monocular eyepiece unit with graduated brass draw-tube, with three useful eyepieces giving a wide range of magnification as under:

10x by Olympus - modern eyepiece
18x Compensating by Carl Zeiss 
25x Compensating unbranded but looks to be by Carl Zeiss

2)  The instrument's main focus is controlled via a pair of brass thumb-wheels located at the top of the limb which move the optical tube - travel and focus are both very good with the optical tube holding in position as it should.  Fine focus is via a single thumb-wheel atop a pillar at the rear of the instrument that also has a smooth action.  The upper limb on this model of microscope is designed to tilt and holds in position on inclination.  

3)  There are three good quality objective lenses on the triple turret, as follows:

5x - Carl Zeiss aa
10x - Leitz #3
45x  - Leitz #6
(all objectives have storage canisters)

The objective lenses and eyepieces supplied therefore provide an effective magnification range from around 50x up to a theoretical 1,125x magnification when using the highest power lens/eyepiece combination. 

4)  The stage is of a circular design with rotation through a full 360 degrees and it has good level of resistance to motion so that it holds in position and it can also be centered via its thumb-screw adjusters.  It's currently fitted with a pair of modern slide clips for holding slides steady which work quite well.

5)  Below stage there's a condenser by Zeiss with smoothly operating iris and centering via a horizontal rack & pinion system, with swing-out feature that I've demonstrated in the listing photos.  There's a rack and pinion system to adjust the height with single-sided thumb-wheel control. 

6)  Lighting is provided by plano-concave mirror on a gimbal mount with height adjustment and near-perfect silvering to both sides.

7)  There is a hardwood case with internal racking, carry-handle along with working lock & key.

In summary, this is a nice clean example of a vintage 1930s Zeiss monocular microscope in very good condition for its age.  This example may therefore appeal to collectors as well as specialists seeking a quality brass instrument from well-known makers Zeiss. 

This is also quite a heavy microscope especially with the wooden storage case, so owing to its weight it will be partially dismantled, very well packed and dispatched by insured courier upon receipt of cleared funds.  Overseas buyers please use eBay Global Shipping if it's available in your territory or contact seller for alternative shipping options/costs.

Thanks for looking - please check out my other listings if you get a chance.