Per Curiam,
The Commonwealth had an unquestioned right to file *349its claim in the court below for the unpaid tax due it by the Keystone Graphite Company. The sale by the trustee in the mortgage, about a week after the lien was filed, in no manner affected it, for that sale was not a judicial one. This was the correct view of the learned judge below, specially presiding, and the judgment is accordingly affirmed.