Hi Jack,  most of the Wurlitzer 125 'all-march' or 'all-waltz'
rolls can be purchased, cut from the original masters at the Herschell
Carousel Factory Museum, and roll no. 3143 is happily one of them!
Your best option would be to order directly through them on their
website: http://carrouselmuseum.org/ 

 http://carrouselmuseum.org/site/whats-inside/wurlitzer-music-roll-department/music-roll-catalog 

Mikey Mills
http://www.mechanicalmusic.org/