Vintage Sewing Machine by Free-Westinghouse (7077935)
Currently $19.95 USD- Goodwill
http://cgi.ebay.com/Free-Westinghous...-/230538031280
($175.00 on e-bay)
Didn't find any higher than $175.00. Sometimes I find that antiques are prices by what the current owner paid in a retail setting vs. what they are worth. I think $300 is too much, even if in immaculate condition and if it had the belt that is driven by the pedal.