Steve
The stanhopea you got from TOS is not napoensis.
It is platyceras. The horns on mesochile of napoensis form a catenary curve and are sharply pointed on the end. The ends of the horns on platyceras a softer curve and are blunt at the ends. Also the median plates of the hypochile on platyceras is almost nonexistant. Thoses of napoensis are much wider.
I have posted an excelant botanical drawing of Stan napoensis from Selbyana Vol.1 August 1975, No 2
Selbyana_1975_nap_Page_18 - Orchid Board Galleries