[bytor666]

Hi there....I just got an older pair of Celestron 20x80 Binoculars used from a trade. On the left, next to the eye lens it says CELESTRON fully coated, and on the right next to the eyelens it says 20x80 GIANT Field 3.5* 183ft/1000 yards and 61m/1000m.
The coatings look like the standard magnesium flouride. Does anybody know what year these were made and how much they are worth?....or anything else I need to know about them?, or can you send me a link with more information?
One thing that I noticed about these is that when looking through them , the eyelenses "shift" up or down if you lean in too hard on them. Is there any remedy to stop this from happening?...I wish that I knew a way to stop this because the focus changes when this happens !!!
~Thanks~ !!!