1982 Mercedes-Benz 240d w123

1982 240D w123 Wont let me change title.
3rd time Being relisted due to non paying bidders, buy it now or best offer.

Video of first start-up and drive in 6 months (night time)
https://youtu.be/oWZAwsZVl3w

Engine Runs great, transmision shift without fail. Diesel engine fires up in less then a second, no matter how long it sits. Inherited from family and was going to give it to my daughter but she wanted a newer car.

Do not want to sell but am moving and need to make room. New battery Car was garaged most its life until about 5 years ago.

Tried to turn on heater/A/C and It did not blow. Needs a new switch. No rust as far as I can tell. Tear in armrest and driver seat. All other seats are super clean.
Driver back door wont open
Slight heat cracking in paint on passenger side quarter panel and a couple new cracks on the hood

Noticed it has a small coolant leak, i noticed it underneath the radiator when parked (does not over heat) im thinking radiator but have not got around to checking on the specifics of it. Comes with original air filter housing, i removed it because when id start it each week it would vibrate due to worn airbox mount.

Aftermarket stereo and blaupunkt amp and hidden sub installed.