Frank,
Thank you for the information. I've today acquired a little paperwork on what I am slowing learning to call the trailer (instead of the caravan!)
It was bought by its previous owner in Peru, Indiana. The Indiana Certificate of Title gives the year as
1954, but that will of course just be a reflection of what was said to its issuers. To my mind, it can't be earlier than 1949, as that's when Silver Streak was founded (if I have my facts right). Given your thoughts re. the windows, that would suggest that it's maybe 1949 or
1950. Further mystery.
Yes, it will be a heck of a challenge, but I'm looking forward to learning some new skills.
Regards,
Richard