Not sure if the ban has been lifted in Thailand but any juvenile 3bars are definitely Indos.
No LFS here at least dare to label ITs off as STs. The usual trade name 'Grade AAA 3 bars' has been floating around long enough for one to guess that there are indeed no juvenile STs for sale.
One has to pay a premium price if a solid 3bar IT is available. No surprises here. Rare specimen does pop up every now and then.
Unless the seller can verify that that 3bar in photo is the elusive ST, paying marked up prices is the only sure thing for one to own a 3bar Datnoid.