The AR date-code was inscribed each time a stamper was made; they vary considerably in style but it's all the same pressing: some are MM-DD-YY (Variants 1 and 2), but others use a pressing-plant MMDDY shorthand with only the final digit of the year (with or without a / separator, as in Variant 3). All runouts also contain a tiny and indistinct set of initials that have not yet been identified. (RK, R10 and PY have been suggested, likely that of Ray Hagerty.)
Issued with a special inner sleeve showing a picture of the band in black and white. Also released in mono (# EKL-4011).