F3 is still very close to wild stock which is probably why they still have that dotted pattern. I would definitely look at the "New" varieties for identification. Maybe from areas closer to Peru? It is either P. Scalare or P. eimekei. The spots may be the difference of classification?
Some BEAUTIFUL Angels in that story. Some of the reds had me salivating. 
Yes, I believe that's the one.
A little history: P eimekei was first thought to be a separate specie then it was deemed a synonym for P Scalare but, as you will see in the magazine, the author is making a case ( a good one in my opinion) for P eimekei to actually be a 4th type of Angelfish separate from P scalare. In the past 15-20 years, many new areas of the Amazon were discovered and/or explored and with that, many different Angelfish have been "discovered". For whatever reason, taxonomically they are being called P scalare with the explanation that all of them are just geographical adaptations of the same fish. This could be right or it could be wrong. I have no idea but would love to find out.
I don't have the magazine in my possession anymore but I believe I saw one in there with spots similar to yours.
Hope this helps
I checked the store around the corner from me and they had a lot of back issues, unfortunately not the one I was looking for, but I did get the rare pleco issue that a friend of mine was in.
but that doesn't help me look up the pic I remember because it may not be in that issue. LOL My buddy has the mag in his store so I can look at it again when I get down there. I just seem to remember something special about the eimekei pic. Sadly, I have some old books that use the P.eimekei name but the pics are drawings not photos so that didn't help either. 
But the name game has been a long ongoing issue with many older people in the hobby ( cough, cough ) because we remember that name from a loooooooooong time ago. Now that there seems to be new evidence of it's validity, it cranks up us old timers. ) today's domestic Angels are nothing compared to the wild forms of these fish. The body shape has changed, the fin shapes have changed, the colors have changed and their behavior has even changed. I'll take a wild fish over every fish I've seen in the past 30 years any day of the week. I only wish I had the facility to bring in all the different wild variations that have been found. I'd even give up my 1/2 blacks for that 
What do you think would happen if, say, the original fish finders saw fish like, say, Balloon Mollies, in the wild? They would most likely think they were a different specie unless they knew their history. It's mind boggling.... if you let be. 
I understand that, even have the link for the store in my favorites folder
As for you, Gillie, being the "boring wild type guy", far from it. To me ( and apparently you too
( FYI, it's the spots that really have my attention. )
http://www.aquaticcommunity.com/aquariumforum/showthread.php?t=117709
