Complex sentence: Two prototypes were made, one electric start for the show, the other a kick start for testing; the latter, the only one left after the Meriden factory finally closed in 1983, was from 2010 on display at the London Motorcycle Museum.
Split into simpler sentences: Two prototypes were made, one electric start for the show, the other a kick start for testing. The latter, the only one left after the Meriden factory finally closed in 1983, is on display at the London Motorcycle Museum.