Hi Jason, I don't have your answer but I'll tell you about my own research into the matter about three years ago for my '42 AC-B. The formula number Y5074A is "not found" in DuPont's on-line color information. There is a YS074A that is listed as "spectramaster yellow". It is a Centari-specific formula. I believe it is the result of someone having a computer match the color of some sample piece. How close it is to the original AC early persian orange (persian #1 so-called), I don't know. I have looked at some old color chips in a DuPont agricultural color book. There is listed a 655 and the 29047 that you occaisionally see used for AC persian orange. From those chips, compared with an original part from my B, I would have to say that 655 is that early pumpkin shade of persian orange and that the 29047 is, as you say, the later, redder shade of persian orange sometimes referred to as persian #2. The on-line DuPont color information seems to bear that out since the 29047 is similar to the 655 but with the addition of some magenta. Neither the 655 nor the 29047 are available in Centari per the on-line color info. They both are available in DuPont's NASON line of enamels and urethanes. If you think DuPont is confusing on the two persian oranges, you should check out Martin Senour (NAPA). They have at least 3 or 4 different ones listed as AC persian orange! Thinking the DuPont 655 was the correct color for me, I checked a DuPont-to-PPG cross reference that I have. The 655 crossed to PPG 60396. However, I kept seeing a PPG 60080 being discussed on this site and the "other" AC one. Confused about the whole matter, I bought a quart each of 60080 and 60396. Here's the result, as compared with my original B part (the lower belt guard for the belly sickle mower). That lower guard had been in the barn with other "junk" for the past 60 or so years so it was not faded by exposure to sunlight:
As you can see, the 60080 compares well but the 60396 does not - too much red. So much for cross references. The 60396 should be the later persian #2. I suppose the confusion comes about because AC has two persian oranges that are different shades with no distinctive information as to which is which. Neither DuPont nor PPG (or even MS) refers to anything as "persian #1" or "persian #2". The only places I have seen reference to such numbers is on internet message boards. I can verify that PPG 60080 is as close to the original early persian as you probably can get. The DuPont 655 may be also but I can't confirm it. The DuPont YS074A may be too, but if it is a computer match to an already faded color, the result may not be the best. If you want to stick with Centari (an excellent acrylic enamel, btw) you probably don't have a lot of choice, especially if you don't have an original part to have scanned. I'd suggest you buy just a quart to check out prior to spending a lot. Centari is not cheap anymore. A more cost effective alternative might be in the NASON line if you want to stick with DuPont. Frank Stalfire is a DuPont rep. He's on this board and might have more to say on the subject. I know your predicament - I've been there. Rod
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