Burma Jap Occ SGJ12 and J14 on 1942 Cover from Kyonpyaw to Maubin

1942 (9 JLY) cover from Kyonpyaw to Maubin franked at correct 1a rate by 1942 (May) KGVI 3p bright violet and 9p yellow-green type 2 Peacocks of Myaungmya tied by KYONPYAW cds with very fine arrival backstamp (17 JLY 42). From Lim Peng Hong and probably a philatelic usage but a fine and rare cover. RPS cert (1994) perversely states not correct postal rate .Original Purchased from Stanley Gibbons (Still on their card)