Andonstar are good. ? Check out their full range- Look out for those called (not all are) soldering microscopes. ? This indicates there is or can be a big gap between the lens and the objective item in use. ? ?This is of course not a requirement for a coin or biological microscope?
Without this gap boards with tall items on them or trying to get a soldering iron or finger in there is difficult or impossible?
Bruce Akhurst