1959 OS type 11 Jet. Whats left of the spare reeds and the Ford Model T ignition vibrator box to provide a 'shower of sparks' for the plug (model T's used one of these boxes for each cylinder). It was wired to a 6 volt hot shot latern battery and was keyed with the momentary button in the picture. The schreder valve nipple for the bicycle pump is just above the fuel line were the fuel metering jet is.

John