What Mellow Mike is trying to say is "that is not possible unless someone made a one off and never told anyone". If you go here to this site
you will see that a 34 footer was never made until the 90's. some 40 footers were made in the 50's for the railroad, but I doubt you are talking about one of those. How about you look at the plate next to the door and give us the serial number. That way you will know exactly what you have. Some photos might help in determinng the value also.
All Overlanders are 26 or 27 foot long not 34 foot. You don't have to believe me, but it is true.
The plate will look like this...