Good stuff!
For conversation dunno what the "TN." represents...not the interior IMHO - but I could be wrong!
Reason: "62B" ='"Dark Camel Tan" "trim color and material for the car" according to my on hand info...
To the owner: My previous post indicating "possible" odd special ordered two-tone interior...even if it was, the dash and glove box door color would color match (all same color)...prolly obvious but never know some lurker reading this thread showing up at Nats and/or local show w "rare" alternate color glove door to go along with "factory" Buick engine decal on his 77, 78, 79 Formula for example!