Nikon binoculars Monarch 5 20 × 56 roof prism formula 20 times 56 caliber MONAR 4571137587307 | eBay
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Nikon Monarch M5 8x42 Binocular | Waterproof, fogproof, Rubber-Armored Binocular with ED Glass, Long Eye Relief, Limited Official Nikon USA Model : Industrial & Scientific - Amazon.com
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