I purchased 2 of these dash multi mounts from Len at American Dirt Roads and only needed one (wanted to see which version I preferred: wrap-over or flat version. I decided to keep the flat version). The item for sale is the wrap-over dash version, totally new, never installed, Black, includes original hardware.
The one I have in my 90 is priceless--keeps my Garmin GPSMAP 478 steady and secure. Go here for details: http://www.americandirtroads.com/catmultimount.html
Here is a pic from Len's site.
PRICE: $23.00 includes free shipping to continential U.S.