Imknow of a pair of Nikon Monarch glasses for sale. No where on the binoculars does it say the model ( ie... 3, 5, 7, dtf, atb, ect. How would I find out? All is on it is Nikon Monarck on the left side, nikon 10x42 6* waterproof on the adjustment knob. Made in China of course. I have a serial number too. And what is the 6* mean?


















































