I have all of two melon balls.  I pulled out the white one and hoped for opalescence, but no.  I tried to imagine that I was seeing a hint of orange, but it was just wishful thinking.
 
	I did get a little fire coming through the blue one.  
 
	I don't know how to judge the pontils.  Faceted I think on the white and maybe melted on the blue, but not sure.  The marbles came with a date -- July 14, 1879.