How to ID the 24k gold A single?

[HiruNoKaze]

Agh, how often do you get the obi with used pieces? Not often enough! It REALLY sucks when you get one without obi and then you see another used one later with obi! ULTRASUCKS if the latter is even cheaper.

Damn I saw original DT01 looking in excellent condition for $15 at this one store, but too bad I already got the low-priced rerelease version from YA!