This jacket is in exceptional condition for being 36 years old.

See photo 11 (incredibly small tear) and 12 (some wear on the back of the sleeve.)

78238E(AS) jackets began in the 70s and are still made today.

Size is a 44” (typically a big medium, or smaller large.) model is 5’6”, 176lb, 44” chest, and the chest is very roomy, i could definitely layer under this. I feel a 46” chest could fit, no problem. 48 would be stretching it.