Blackbird's Match Frame function enables you to find a clip within a sequence from the source.

Additionally, you could find a master clip in the source monitor from a subclip.

To find a clip loaded in the sequence, simply drag the source clip from the timecode display on the source side to the timecode display on the edit side, or drag and drop it directly to the Edit monitor.

This will find the source frame of your clip location within the edit.

To find a master clip from a Subclip loaded in the source monitor, DoubleClick on the source timecode display, or use the Matchframe keyboard shortcut, and the masterclip will pop up in a new monitor. Displayed with a numeric tag.