Auction Sheet Decoder
Paste a Japanese auction sheet, or enter the grade manually, and get a plain-English explanation of what it means before you buy.
Works best with sheets that include a grade like "4.5" and an interior letter like "B". Formatting varies by auction house, so double-check the result against the original sheet.
What it means
Paste a sheet on the left to see the decoded result here.
Grading varies by auction house
Overall and interior grades follow common conventions used by major Japanese auction houses, but exact criteria differ between them and between individual inspectors. Diagram codes in particular vary more between houses. Use this as a general guide alongside photos, inspection reports, and your importer's advice — not as a substitute for them. This tool isn't affiliated with any auction house.