Looks very nice. You should easily be able to tell if it's a bumper by moving the watch and feeling the bump as the rotor hits the buffers.
That's a gorgeous specimen! Especially with the linen, er, 'textured', dial, and amazingly fresh looking case-back medallion and scripts... I call 'Dibs!' (I sure hope the OP realizes what that means! Here's my SS 2782 with cal 354, that would like to be re-united with her golden-haired sister!:
Thanks for the correction... I guess we'll have to call it 'textured' until someone else can give us the real name...
These dials have be referred to as guilloche by many, including Desmond Guilfoyle, for many years. Whether they technically meet this definition would depend on whether they are engraved, or stamped.