Very rare car in the U.S. All the Longchamps listed in the original Registry start with THLC ('75-'85; production was '73-'86), so if there were other starting letters, they were likely mistakes that should have been caught by Italian state licensing before shipping.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.