What year did you order it? (I presume it was the year before the planting year.) There were peaches like Tiana that were added to ACN’s inventory in the past few years, so going by the current catalog won’t really help.
What peach ripened after this not-tango II for you? Or is this your latest ripening peach? Do you have carolina gold? If so, when did those ripen in relation to this one?
Loring is listed in Okie’s book at +16 (to redhaven) I believe, and @olpea has it at +19.
Victoria is +49 for me. Mark has it at +45.
Jerseyqueen and Redskin should be around +28, so it has to be something after those two (imo).
acn2017.pdf (7.9 MB)
Going off the 2017 catalog, my assumption would be 28-007, encore, autumnstar, laurol as possible candidates.
Btw what is the leaf gland (check mature leaf)?, reniform, globose, none?