English: A tartan of 42nd Regiment of Foot (Black Watch), found in the 1785 records of Wilsons of Bannockburn and still in their Key Pattern Book of 1819, as "42nd Coarse Kilt with Red". It is believed to be the sett used for the regiment's small kilts while they were still also using the belted plaid (great kilt) for dress uniform. (After abandonment of the belted plaid completely, c. 1814, the regiment used their belted-plaid Black Watch tartan for their small kilts.) The pattern is Black Watch with the black over-checks removed, and a red over-check (with black guard lines) placed over both the green and the blue.

This image is not exactly full-sett, and cannot tile horizontally and vertically; this centred and zoomed-out version was created for tabular comparison to other regimental tartans.

This is a usual, mirroring tartan. Scottish Register of Tartans does not have this sett in their database. Thread count provided by Scottish Tartans Authority (with colour codes normalised to standard tartan colours), in "/" notation: /R6 K4 B50 K56 G50 K4 R6/ or in boldfacing notation: R6 K4 B50 K56 G50 K4 R6. For a closer match to the original sample in the Key Pattern Book, use basic red, dark blue, and hunter green.