What's a rust-free W123 240D worth in north-east?

[rstl99]

I'm still getting my 82 240D auto ready to sell (bought a 300TD and the 240 has to go), but am wondering what I should expect to get for it in the North-East (Ontario Canada). It has about 210,000 miles, very good mechanical condition, excellent interior, and a solid rust-free body with original beige paint (the reason it's rust free is that I bought it from a guy who brought it up from Arizona 13 years ago, and it has only seem summer roads since then, never salt, and has been rust-proofed a couple of times for good measure).

I'd like to get a fair price for it, but am concerned that prospective buyers may try to low-ball me given these cars (with usual north-east rust) don't sell for much and I figure I should get more than $1-2K given this one is lacking rust. How much more of a premium should I realistically be shooting for?

Thanks.