Not all featherweights had the larger trays. The earlier ones certainly do. Somewhere in the 1950's probably about 1954, Singer started cutting corners. The trays became much smaller and fit on the left hand side. My 1948 and l953 featherweights both have the larger lift out tray. My 1955 model has the smaller side one. Featherweight face plates also underwent design changes. The earlier models sport the more elaborate Egyptain scroll design while later models have the striated or striped design. There are also variations in the position of the light switch and the gold trim decals and the style of the carrying case and handles. Knowing about these little differences help potential featherweight owners quickly date a featherweight without actually looking up the serial number.