This is a classic telescope as sold in an Ebay sale of antiques, a Dolland three draw leather covered brass telescope. Run of the mill, lots about, not a high value product, mass produced in the early 1800s.
So why did I buy it, at a very inflated price compared to any others? Because this one is different.
Readers of this site will be aware that the name Dolland possibly became a generic name for telescopes with an achromatic objective lens, giving the better performance of the telescopes originally patented by Dollond in the 1760s. So Dolland telescopes became cheap copies of the Dollond standard. However, while this telescope might be a lower cost version of the real thing, it has been kept in an air-tight tin (metal) case for over 150 years, I would guess.
The telescope is pristine, it has no corrosion to the brass, and the leather is looking healthy, and with no stretch to the stitches. What is more the edges of the sliders on the objective and the eyepiece feel sharp, they have not been worn smooth by use or wear. It looks like the telescope has never been used. No old polish secreted in the corners either.
Dimensions are: opened length 34.5″ without sunshade extended, or 37″ total: 12″ closed. Overall diameter 2+3/8″, container diameter 2.5″. Came from a house clearance in Bury St Edmunds.
So perhaps it should be put in a glass case in a Museum? I may be one of the few people who have looked thru it, and it works really well: the lenses have no dust and have never been cleaned, they have never needed it.
The screw threads are not as good as they could be, ie not as good as the Dollond versions, but this is what characterises the Dolland units. The tube walls are probably thinner than the Dollonds, so will not be as robust in use, but in this example are looking good!
There is no way I am going to touch it further, except for trying to wipe off some recent fingermarks: it is to stay bottled up. Even the photos used here are from the Ebay sale page. One day there will be some Museum that needs such a brilliant specimen!
Accession number 281.