They are called Blum 1-3/8 overlay hinges. I needed some a few years ago for my 268. Here is the first website that I googled. I hope this will work for you.
http://www.hardwaresource.com/hinge...es/blum-compact-33-hinges-and-mounting-plates
:smt038So Glad I checked here first!! I have a 1988 268 Sundancer and the 2 of the hinges have failed. Order 6 of them to use!