Well Nancy and everyone, We just joined the 306 club again for the 3rd. time. We bought a black 306 today with button holder, zig zagger, a dozen bobbins and the little black cams. The machine sews great but what I want to know is were you able to date yours. The serial number for this one is W1505855. It is a 306W. The bobbin case has the cut out like the 306K. Bought all for 20.00. Didn't take the cabinet it was trash. Yesterday Hubby bought a 99K with the box of attachments and he got it sewing too. You all think you have the bug but, I think he has you all beat.