Thanks both, yes they're allen bolts front and rear.

The only marking anywhere is the expected serial on the BB underside, a stamped 'S1006 57' on a flattened section (I can put up a pic tomorrow if you want), other than that the only livery I can find anywhere is the campy on the dropouts already seen. There aren't really any flourishes that would pinpoint it's origin.

The actual water bottle holder is a REG fwiw.