Becker ATC4401 with altitude encoder

I've done an ADS-B upgrade and would like to sell my transponder to anyone who wants to add a layer of protection while towing or soaring etc. It's a 57mm and was just signed off, and can include the sign off for it. The unit works perfectly and has been always inside the glider or in my home. 

The encoder, transponder unit, and harnesses are included. The harness has been cut to allow pulling it through - but it will be super easy to just rematch each wire and crimp or solder as you please. Maybe a 20 minute job. 

I will not ship internationally. However I will ship FedEx 3 day or faster.