Yes, there is a lot of incorrect, old and conflicting information concerning persian orange. I ran into this myself last year in researching how to get the right color for my '42 B. Some of the confusion is caused by old numbers that may have been correct at one time but are no longer carried by the big auto-paint suppliers as current mix formulations. Also in recent years, DuPont, PPG and Martin Senour (NAPA) have relegated their non-car (also called fleet) color mixes to a second tier "economy" line of paints. In DuPont this line is referred to as Nason. In PPG it is called OMNI. I don't have the MS line designation handy.
My search last year was a failure with Martin Senour. They had three or four mix numbers for AC persian orange, all of which had too much red in them per in-store color chips. DuPont's information was conflicting regarding two different persian oranges. One of DuPont's numbers (655) appeared correct from a color chip but other information indicated 29047 to be the earlier "pumpkin shade" of persian orange, sometimes referred to here and elsewhere as persian #1. However, the color chip for 29047 showed too much red. The mix formulation for 29047 also showed having some magenta where the 655 did not. That would confirm the more reddish shade. I actually wound up buying too different quarts of the PPG persian oranges to finally satisfy myself that I would have the correct shade. I definitely wanted the earlier "pumpkin shade" of persian orange. A visual sample of the two is here.
I decided that PPG 60080 was as near to the original shade of orange as I was going to get with currently available automotive type paint mixes. I understand that AC used this earlier shade of persian orange up until 1960 so I think that is the one you probably want. It is available in PPG's OMNI line in single stage acrylic enamel (MAE 60080) with and without the use of a hardener, in single stage acrylic urethane (MTK 60080) and in two stage urethane basecoat/clearcoat (MBC 60080). This should be available in local businesses that supply PPG paints to autobody shops.