I’m no expert, but it doesn’t scream Tommasini to me. If the seller was up front in pointing out that it wasn’t a Tommasini, then it probably isn’t.
I’m surprised to hear Tommasini did ‘budget’ frames! I always thought they were high end only.
Without any serials or panto’s it’s difficult to come to a conclusion, and I don’t know anything about Viners to give any comment.
All that aside, looks like a nice frame. Would you say mid to late 70’s?