I guess by the time the F2 was introduced built in meter is the norm so that few ever bought the F2 with the DE-1 and thus is scared. At one time I think around 1980 or so I visited a camera store I saw they had the DE-1 on sale for $42. In 1980 $42 wasn't all that cheap but I picked it up any way. In 1984 when I my F2AS was stolen I gave my friend the DE-1. Now think about it I had 2 of the most valuable viewfinder for the F2. Well the DP-3 was more rare but I don't think I want it more than the DP-12.