Pinarello steel question

here's an old trick - remove the bottom bracket axle (if fitted)
and stick your finger inside and up into the seat tube.
you should feel the helicoils inside that one of the tubes if it's SLX or TSX.
also if you shine a torch down the seat tube you'll notice the rifling
down at the bottom bracket end of the seat tube.

anyway, that 's my tuppence worth!
 
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