Is that a B10 starting the bottom left, or 810? The numbers after that are the shipping order numbers, then (B)arracuda, (P)remium price line, (9) sport hardtop (fastback), P4X premium black interior, RR1 yellow exterior paint, (B)lack upper door frame color, AB31 273 2bbl engine, C1 3 speed manual trans, column shift, R1 AM radio, b4 bucket seats. I can't tell if there's something under your q or not. If so, it would be an odd code.