Hello - David from Christchurch in New Zealand here. I recently acquired (read scrounged) my sister's Shiraki as I'm taking up the guitar after enjoying the ukulele. She swapped it for another guitar after the previous owner spat the dummy at her being present when another person played it without permission. Jeez - talk about sensitive!
As I know nothing about guitars I took it to Music World in Christchurch where it was restrung. They reckoned about KP$350-500 in (Kiwi Peso) value as it had a little ding on the cedar top. Beautiful rosewood sides and base and loverley tone says my friend the sweet Shelley Sweet.
Previous owner had a degree in classical guitar.
The guys in the shop reckoned the fret-work sound hole muffled the sound.
Reckon I might jes hammer it out - jus kiddin.