How confident are you in this being a '71? I'm no expert, but a couple of features on this one say '73-'76 if I'm reading the Classic De Rosa guide correctly -- namely, the hearts on the fork crown and the circled heart on the seat stay cap. Both of those match mine, which I've been told is a '73. I like that the seat stay pantograph is off-center -- gives it more of a "hand made" feel. I've also got the protruding bottle cage bosses, which I think are very cool.

Your bottom bracket cutout is different than mine. I've got a cutout heart there. I don't think that tells us much as this feature seems to have been quite variable in those years.

Congrats on a very nice find!