its' this one I think

http://thumbs1.ebaystatic.com/d/l225...DfuEdofHaQ.jpg

alternately one of these:

http://i.ebayimg.com/t/For-Sinar-4x5-MONOCULAR-REFLEX-VIEWING-HOOD-/00/s/NDAwWDM5OQ==/$(KGrHqRHJD!E7BcvhrRMBO1JOhT!Sw~~60_35.JPG