Engine number?

[notagser]

Where would I find an engine number on an R1150GS?
I've found a number stamped on the gearbox casing (0010011GAE), but so far, nothing for the engine.

 

[Colt]

look under the right hand cylinder.

 

[notagser]

This must be it!

 

[Steptoe]

This must be it!

That's it. And about as ledgable as everyone else's number.. one long scuff.