If I remember correctly, the New York or sometimes called "Eastern" line is listed as 5 1/2 - 6 1/2 (lay 130, take back 110); 6-7 (lay 140, take back 120), etc. It's still a 20 cent line but written different. Everything is expressed as either the favorite to win $5 or the underdog $5 to the price. My bookie used to deal a line like that in baseball years ago.
Yes this is Correct
and agree it really hasn't been used in years as far as I know. unless of course maybe a real old school type of book