An index measuring the prices of domestic corporate goods was up 0.1 percent on month in June, the Bank of Japan said on Wednesday, standing at 101.6.
That beat forecasts for a flat reading, which would have been unchanged following a revision from 0.1 percent for May.
On a yearly basis, prices jumped 1.2 percent - matching forecasts and up from the downwardly revised 0.5 percent gain in the previous month (originally 0.6 percent).
Export prices dipped 0.4 percent on month and2.2 percent on year, the bank said, while import prices dropped 0.4 percent on month and 2.6 percent on year.
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