Billy,
I bought a singer Model 15, I can't find a serial number and upon closer examination Singer, made in China is stamped on the inside. The design is Spinx(sp?) Have I been gypped or were some made in China? Everything looks just as it should and only found the printing after I was home and looked inside with a flashlight. Of course there is no serial Number. My fault, should have taken it apart and not gone by looks at the purchase place. Cabinet is authentic irons, Everything has Singer stamped inside the cabinet in several spots.