There has been a
LOT of mis-information over the years with the name "Overlander" and the "O" in VIN/Serial numbers. There is a very old document still floating around the internet that states the "0" or "O" stands for Overlander which was a 26' Airstream (available in both the Land Yacht & International versions). It is wrong and keeps being perpetuated as it is impossible to purge it from the internet. The "O" does NOT stand for Overlander. Overlander was the name for a 26' trailer - not a VIN# descriptor
"0" (zero) or "O" (Oh) = Land Yacht package
"I" (eye) or "1" (one) = International package
The International package had a few extra bells & whistles. The way the VIN# should be interpreted is:
0 or O = Land Yacht package
OR I or 1 = International package
## = 2-digit number which corresponds to the length of the trailer
T = twin beds
9 = built in 1969
J = built in Jackson Center, Ohio
OR S = Santa Fe Springs, CA
### = 3-digit number which is the sequential build number of the trailer
The organization of these numbers/letters vary slightly in the 60's & 70's, but they pretty much remain the same. And "O" never means Overlander.
Both these situations discussed in this thread are confused by the 0/zeros's in their VIN#s - thus the Overlander name being applied incorrectly.
Check out
this webpage for more info & pics on various lengths of trailers and VIN # interpretation. There are also several other threads here on AirForums that discuss this issue in great length, a good one is
here.
Shari