Sparking interest

The bike I found did not seem to start. The first thing to look at will be the spark plug. After looking in the Engine characteristics in the manual, I found that the spark plug is very specific to this engine, it is a Bosch WK 175T1 - there does not seem to be any cross references in other brands. 

As seen on the picture, it is unusual in its shape, very short! I found one in Germany and in the UK. Bought a one from Germany and am awaiting for this baby to come here so that I can put it on the bike and try yet again to start it.

The complete engine specifics for the Zanetti C50 engine translated from Italian:

Specifications	Combustion engine with a 2-stroke cycle
	Bore	38mm
	Race	37mm
	Displacement	41.96cmc
	Cicle	other
	Compression ratio	7.64:1
	Maximum effective at 5500 RPM at 1 HP	2
	Counter-clockwise rotation
	Fuel consumption	410 gr/Hph
Distribution	Timing with cross lights
Ignition	Magnetic flywheel alternator with fan
	Internal High Voltage coil
	Bosch spark plugs WK 175T1 or equivalent	WK175T1
	Ignition Timing: Fixed	16° to 20°
	Clearance between the points	0.38-0.42