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WILD HEERBRUGG SWISS BLUE GLASS FILTER M20 MICROSCOPE PART AS PICTURED &R6-A-80 Ernst Leitz img{max-width:100%}LEITZ WETZLAR GERMANY OBJECTIVE 10XWILD HEERBRUGG SWISS BLUE GLASS FILTER M20 MICROSCOPE PART AS PICTURED &R6 A 80 THANKS.