checked the backs and theyre JAWA so not original ALDSTADTs or however its spelt.
They brand is STICH which is from the JAWA corporation (i think lol)... hard to find info on em... but they arent even cheap in japan...
Cheapest STICH 18x9s i could find were over 70,000yen + tax... so almost a grand each... but then u have to send em to australia... thats where they get expensive... so if u wanted to import a set as they arent available in australia as far as i can find they will end up being more expensive then the alstdatsor whatever theyre called... the 18x10s werent even listed with a price.
As for dish.. no idea... maybe 3/4 an inch front and 1 and a half back... i'll measure it tonight.
oh... more pics are uploaded in my galerys main page if u wanna see the scuffing on the front rims