I am shooting from the hip trying the make a call based on pictures and not the marbles in hand. But,  
first, that must have been a nice piece of Akro cullet with oxblood, egg yolk, some dark colors and anemic milky opaque!  Second, only in pictures have I seen a S.P. creation. 
Could this be a fabrication from the dark side?   
Big Indian and a braid.