Might be little to no dust particles inside. The item "LOMO Microscope Lens MICROPLANAR 100mm 14,5 F=100 Photography Macro Objective 2" is in sale since Sunday, May 31, 2020. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Scientific Instruments\Microscopes, Lab Equipment". The seller is "mucinetto" and is located in Europe. This item can be shipped worldwide.