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The "AN" stamping is in a black ink and is usually gone (worn away) from most older alternators. A knowledgeable rebuilder will put the correct stamping back on in its proper place, using the proper letter font. The correct alternator and stamping, or "code", for every F85/Cutlass/442 set-up, is shown in manual section 6-1, pages 110-113, of the 1969 Cutlass/442 assembly manual. And, to quote from the 1969 Chassis Service Manual on page 12-24, "The Delcotron generator used on all [1969] 442 models has a transistorized regulator that is mounted inside the Delcotron...The regulator is sealed unit, temperature compensated, all electronic and does not require adjustment. There are no moving parts within the regulator and it cannot be disassembled." So, in 1969, the 442 models (and Hurst Olds) got the Delcotron generator with transistorized regulator, while the Cutlass and F85 models got the external regulator generator. And....good point on the Hurst models; I didn't know that they weren't made until March 1969 - one of those little facts that's good to know and I greatly enjoy learning those kinds of details!
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