<span style="font-family: tahoma,arial,helvetica,sans-serif;">The Model K was one of the last straight suction models produced by Eureka and debuted just after the G, followed by the R and the M. The G became the budget model revolving brush model; the R was the mid-line model, and the M was the top of the line model. </span>
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<span style="font-family: tahoma,arial,helvetica,sans-serif;">Your find is beautiful. For some reason, Model K seems to be very hard to find. I think consumers ended up buying the first revolving brush model from Eureka instead of the straight suction model. Is your serial number somewhere above 2,500,000? There was a 2nd run that began with 2,609,499.</span>