Avionik Straubing APS4A altitude preselect box, the 14VDC version, used in my case to interface an Aspen PFD with a Century 2000 autopilot and provide altitude preselect capability. Includes the arm/disarm and lamp test button. $900, I will bear "cheap shipping," but ask that recipient pay for shipping if 3-day, 2-day, or 1-day service is required.

Photos, click thumbnail to view full-size:

APS4A interface box:


APS4A interface box, ID plate close-up:


Altitude preselect panel, view 1:


Altitude preselect panel, view 2:


Edit 1: added price to title and body text, removed statement about being too lazy to set a price up-front.
Edit 2: added photos.

PM sent

What are you asking for it?

Had 2 PMs with interest, so I came up with an asking price: $900.