Jefferson Glass No. 228 Green Opalescent

Hi Everyone. Today I have these pair of early green opalescent swung vases that I believe are a Fenton pattern. They measure approx. 7 in tall and 5 in wide at the top.As you can see on one the opalescent treatment only affects the upper portion of the vase, while the other is more overall complete and even. The former also has a few white granules trapped in the glass and a manufacturing flaw on one side.
My question is this: Can anyone help me confirm that these are Fenton? And the pattern name and year please? Thanks again everyone.