Using Ebay and Collectorcartraderonline for comparables, I would
say somewhere between $15K and $25K. It depends on the
support you have for your price. Do you have service records?
Has the timing chain been serviced? Do you have the hard top?
There is a 560sl for $31K that has very few miles and a complete
service record.
You didn't indicate where you are from, but your location may
factor into the price as well. Nebraska or Saskatchewan prices
will be lower than Hollywood or Miami prices, I would expect.
Good luck!

__________________
VR
1967 250SL