Frustrated

My dad's hobby was microbiology. As such he accumulated a lot of microscopes and gear. Unfortunately I know little to nothing about the value of any of this equipment. I am trying to learn but it's not easy. Brands like Lomo (Russian) and Zeiss are the top names in the optics of this sort, but I honestly don't know how to evaluate them for their worth. I have a large number of objective lenses that I don't know which microscope they fit on, if they are interchangeable between the microscopes, what each type is used for, etc. For example, I have one sitting here that says: LOMO, Russia, EAB-40-1, XEO18. On the other side it says: EAB, A 40, 0.65, 160/0.17. I freely confess I have no idea what any of that means. I can't seem to pull up anything on the numbers and letters on the internet that corresponds with the type of lens I'm looking at. It's disconcerting and frustrating. So if anyone who is an expert in Russian or European optics happens to read this I could really use some help. Please!