12-04-2013, 09:24 PM
I think Mike Koste is correct. I used to own an ivory Hippo (46-420-I), and it had reddish brown knobs, as I recall. Certainly not ivory knobs. I believe the 1948 models also have brown, or reddish brown, knobs. Not sure about the ivory 1949 version, but it probably also uses dark knobs as well.
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Ron Ramirez
Ferdinand IN