Verde, 1967 - 1972. The pattern was marketed for five years, and it's also how long it took to satisfactorily complete this set. For some reason, the bowl most often seen with DWD in nesting four bowl sets is the 1-1/2 quart 402 or 442. So often, in fact, that at one store I even saw a DWD 442 offered free with the purchase of the other three bowls. Patience was its own reward here, however, as the 441, 443, and 444 were Goodwill finds at $8 total; the long-awaited non-DWD 442 $10 by itself.