A concept design for a Tollan Triad Triangle used in the production of the sci-fi series Stargate SG-1. The concept design which details the episode details and the date; ‘July 13/99’ drawn by ‘Harron’. The generator was used in the series 3 episode ‘‘Pretense’ (although labelled 'Sanctuary'). Measures 43cm x 28cm (17” x 11”)
