Vintage Carl Zeiss "Astro 28" 60-mm Travelling Telescope | eBay
Carl Zeiss Telescopes. Optics, eyepieces , etc. | Astromart
Carl Zeiss Asadul telescope from circa 1914 with tripod, timer and wooden box | eBay
Zeiss Astro page
Zeiss 110 mm. refracting double telescope - Robert Ariail Collection of Historical Astronomy - UofSC Digital Collections
TELESCOPE with stand, Carl Zeiss, 1920s. Other - Technica & Nautica - Auctionet
Sold Price: Scarce Carl Zeiss Jena Monocular Telescope 'Dosenfernrohr grosses Modell No 36' 1897-1905 - [Tin Can Telescope] [Large Model] with three eye pieces which by rotation may be placed as required