P 51 D serial numbers question?

[4trade]

Does anybody here know what serial number (up) factory start to add fin fillet for P 51 D?

Angels Playmate (44-13693) is shown with fin fillet, and i presume that it is add in field...because Courser II (44-13706)is shown without that fin fillet in a book: Mustang Aces of the Ninth & Fifteenth Air Forces & the RAF

[4trade]

I find out that Angels Playmate was P 51D 5 NA, and that was without dorsal fin at factory. Factory start to add dorsal fin for -10 NA and newer models....just i really like to know what serial numbers start to be -10 NA or newer planes

[evangilder]

Keep in mind that serial numbers went in production batches, so where one production run ends of say, P-51D-5, the next serial number could be a B-24 or something else. But the first run of P-51D-10 were as follows:
44-14053 through 44-14852
North American P-51D-10-NA Mustang
c/n 109-27686 through 109-28485.

Most likely, any P-51s with higher serials than that would be -10-NAs or higher revisions.

[4trade]

Thank you! This kind of information is hard to find for me....and it gives some great angle of view for those tail numbers/ models of planes. I am big fan of those early P 51D without dorsal fin. Now when i watch those old pictures in a net or book, i see much more those early ones,with fins add at field.