It's a mystery - can you help identify this enamel?

I have this big bin of Pearl White vitreous enamel that came with a vintage lot I purchased.   The problem is that I only know the colour name, and that is it.   The label had washed off, it says Pearl White, that is all I can make out.   I do not know what brand it is, if it is transparent or opaque or  opalescent.   Have any of you heard of this colour in an enamel brand?  

If you would like to test it for me I will send you a free sample.   I just don't have time, but would love to see what it looks like fired on various options.

email me if you are interested in being a tester:   caroline@emportiumvitreum.ca