Jon,

Ditzler/PPG: Coppertone: DQE-20941 (PPG 20941) - supposedly, this is not currently available (even as an offset - another formula close to the original)

DUPONT: Coppertone
DUCO stock and order numbers: 1683-H (246-72005-H)
DULUX coode: 93-72005
Combination number: 536

Note that my Ditzler/PPG number is slightly different from yours.

Standard Interior Color (1954 Chevrolet Truck): Pearl Beige: DOCO order number 1746 (DUCO code: 246-72389)
DUCO Flattening Compound (250-81633) is added in accordance to label instructions.

Are you able to get a DUPONT mix of these old colors? PPG still has most of the 1954 formulas, except for the Coppertone and Commercial Red?

Tim