I have had one of these watches since new, purchased from Nesler Jewelers in Dubuque, Iowa for about $800. Love this watch but my eyes are not allowing me to use it anymore, I have it up on EBay.

http://www.ebay.com/itm/49-9421-CITIZEN-QUARZ-SCIENTIFIC-ROUND-CALCULATOR-Near-mint-EXTREMELY-RARE-/161045746810?ssPageName=ADME:L:LCA:US:1123