I have a few very nice L-3 Electric Attitude indicator. Part# 504-0111-942. Model# 1100-28LS(14E). 28volt DC. 14 degree panel tilt. Internal 28volt dimmable lighting. 2.7 lbs. Units look near new. working when removed. All factory seals still in place. You can adjust the tilt of the instrument to fit your panel by using instrument wedges which aircraft spruce sells, or make them your self. This would make a nice backup, if you only have vaccum driven instruments.These list new for $4300. Selling for $625 shipped. Below is a picture of the unit.

If interested, send me an email.

Fly Safe,
Guy Foreman
https://www.dropbox.com/s/eui8z7d5hkm0g1u/photo.JPG?m