Dave I will compare them after work but I am pretty sure the ones one the trailer match the one good one Scamp sent. Devin in parts at Scamp confirmed what I suspected that they only have one hinge for both the top and bottom of the door. I did learn a few things from him from our talk:
(1) the Scamp door is narrower by about 1/4 to 1/2" than the Boler
door for anyone interested in purchasing a new door for their Boler
but they have put some on Bolers before and he mentioned the seals/trim show a little more than some may like. I suppose this could cause issues with the door latch so the strike plate may need adjustment or altered altogether.
(2) he told me that Scamp was building Bolers in 70/71 and started building Scamps in late 71 or 72 and with my serial number it is most likely an American Boler that came out of their plant.
(3) when they started making Scamps they made some small/minor modifications to their molds
Donna I believe Casita
does have different hinges for the top and bottom of their curved doors.