What do you think of this? (scroll down to see the listing).
I found it by accident. It was posted in the "Sets" category with the spellings "Scheaffer" "Snorkle."
Notice in the second photo the pen is chalked.
Sweet - looks periwinkle to me but, color on the bay can be deceiving. I own one such periwinkle that is pastel blue afterall.
Roger W.