The third issue of the Matchbox Yesteryear models with the last of the pen and ink sketches of the models and the end flap with a now red number in a white circle on the dark blue background.
Matchbox Yesteryear Y7 Mercer Raceabout mint in an original box.
No marks on it but it does have holes for mounting as if it was meant for an ashtry or cigarette case. This makes me think that this is a later casting in an early box and were probably not a pair when purchased.