OK,
before I forget and if you do have to finds something look for a stainless steel strap hinge or chrome strap hinge or even brass if you want a little gold color..you can type in mini in the search to find smaller ones, most are going to have 4 holes but if they are cast you can cut off the extra length to make them smaller, don't get a stamped type because you cant cut them down and make them look right. you`ll probably want a pin through the hinge so you can replace it with a screw to tighten.
Also available are weld on strap hinges there you can cut them down and drill your own holes.Like I said a marine supply would probably be best bet but who knows, maybe a hobby supply or craft store would have something.
Good luck.