Mercedes-Benz 300 SDL

Purchased five years ago from a MB collector in Augusta, ME. I believe I am the fourth owner.
Well maintained and cared for. Garage kept. I have service records documenting all work under my ownership by local Mercedes repair shop. Some items that have been updated include brakes, glow plugs, tires, blower motor, and castor mounts. Has current Maine state inspection sticker.

This car is in excellent condition for 30 YEARS OLD.
There are some minor flaws listed below. I'm happy to provide pictures of any of the following, just let me know.
Exterior:
1. Underbody: Some light rust areas under the middle of car.2. Rear doors. Bottom sections have one inch rust spots and holes. Most serious rusting on car. 3. Passenger side wheel well. Two quarter size spots where rust is starting to flake.
Operation:
1. Headlight warning light in dash comes on when using lights however both headlights/running lights work fine.2. Air conditioning blows cool but not ice cold.3. Radio is on fritz. Speakers fade in and out. It is original sound system with cassette deck.
Interior:
1. Shifting case wood cover is loose.2. Small heat/expansion crack on each side of dashboard.3. Passenger side rear door has some cracking yellowing leather below window.4. Rubber cover missing from parking brake pedal.
Again, happy to provide additional info/pics.
Buyer arranges pick-up or delivery. $500 non-refundable Paypal deposit required.