Not just centerpulls, but the extremely rare brazed on post center pulls. I think it's the only vintage production frame with that feature. The advantages are that the brakes are significantly stiffer (more efficient), and they pivot near where the edge of the fender might be. Sidepulls and V-brakes can pinch the fender, something to consider when looking at the overall integration of the bike - wheels, tires, fenders, and brakes are interrelated.