Mercury made trucks from 1946 to 1968. Designed and built primarily for the Canadian market, Mercury M-Series trucks were also sold in the USA. While just slightly different visually from its Ford counterparts, the Mercury M-Series trucks were mechanically identical to Ford pickups (via Motorbiscuit).
Even though Mercury was Ford’s upscale brand, M-Series trucks sold across the border had fewer options since the Canadian market was smaller. The production lasted until 1968.