Value will be dertermined by the market. What kind of shape is it in? What components is it equiped with? Those are the standard variables. Surf eBay and Google the bike forums for similar units to get a guestimate of the value. A local bike shop may be able to help.
The value is, that it's a life saver if you realize you can ride and carry a load or a person if modifyed along and stay in shape at the time.
A lot. They are rare bikes. I've seen them go for as high as 500-750 dollars US.
Probably not a lot, it's rare for bikes to turn into real collectibles. Your best bet is to look at craigslist/ebay or similar to see what that kind of bike is selling for.
The cast of Tandem - 1965 includes: Antoine De Rudder Christian Marin
399, includes slant 6, V8s, and tandem axles
Value of old 1965 20c english
Value of old 1965 20c english
0.01 USD. The face value.
Pre-1965 US quarters are 90% silver with a value of about $2.50 just for the silver.
25 cents.
Value is for the silver about $2.50
Face value: 10 cents.
Proof sets were not made in 1965, but a 1965 special mint set is worth $12.00 USD.
1965 to 1969 Kennedy half dollars were all struck in 40% silver and have a bullion value of about $2.00