This postcard by W & AK Johnston features as illustration of the red tartan as ‘The Clan Tartan’ as well as a man dressed in an ancient red kilt and fly plaid with matching hose. The illustration of the kilt and fly flaid is precise and recognisably the ancient red tartan.
It was seen on Ebay: https://www.ebay.co.uk/itm/335979003891. Photo credit ccdundee. there is no information from the seller.
Threads of Belonging 