I think the Caravelle was only made in 1980 and in three lengths. I read it was a continuation of sorts of the Argosy Minuet, a trailer that was narrower and maybe designed for the European market or maybe European caravans.
As Bubba L suggests, post the serial number and folks here will decode it for you. The green stripe and green awnings may have been a special order, or may have been done by a previous owner.
The Caravelle is a rare Airstream for sure.
WBCCI #8607 VAC Region 11
KnowledgeBase trailer renovation threads: 69 Globetrotter, 76 Sovereign, 75 Overlander, 66 Trade Wind Such fun !