Any sign shop can duplicate them for you out of vinyl for a very reasonable price.
I had a friend in sign business make mine.They are not from the 70's as i used the current design that Seacraft has,but I'm happy with them.
You can go on to brands of the world .com,and legally download the seacraft logo for the design.Just click onto the logo,and a page will come up with an agreement to agree to use it for your personal use.
http://www.brandsoftheworld.com/sear...30/105866.html
I had him do this in a color similar to the canvas work.I've since added the 74 Classic sticker to it.
