Seth Thomas Trademark Clock Winding Key #6/3.60mm

This is a U.S.A. made unused Seth Thomas Trademark clock key. This key will fit your antique Seth Thomas mantle or wall clock. This key will not fit Seth Thomas clocks with German movements in them, those clocks need my Hermle #7 key. This key is a #6/3.60mm

This key is American scale.

Check out our key size chart.