That's a Wald Giant Delivery basket, part #157. These were definitely very popular with paperboys BITD, as well as urban food delivery ppl since probably the dawn of time til present. They've been immensely popular in Phila these past few years; I can't go to Center City without seeing a few strapped onto various commuter bikes locked up at the curb. FWIW, I'm using one on a Worksman truck, as I don't have the original basket... The Wald 157 is a sturdy beast, even if it's a smidge on the small size.