This listing is for a vintage paper advertisement. This is a 1967 ad for a Wild Heerbrugg M-20 Research Microscope! The size of the ad is approximately 5x11inches. The caption for this ad is 'Some things any optical microscope can do. Other things some can do. A few things a few can do.' The ad is in great condition. This vintage ad would look great framed and displayed! Add it to your collection today!