Spence is probably right. My source said that the car was built for bad roads, and the 1910 Reynold-Jackson was described back then as "The three-wheeled automobile illustrated is one of an order of 50 for exportation to Costa Rica, and built by Messrs. Reynold Jackson at Notting Hill Gate, London, W". Unfortunately I don't know the picture that came with that description.
Does anybody happen to own either "Car: A Journal of Travel by Land, Sea and Air", No. 413 from May 4, 1910 or the "Veteran & Vintage Magazine" where it is covered in the "Sixty Years Ago" column?