My measurements of the inner diameter varied from 33.5mm to 33.8mm. I measured the width while I was at it which was 70mm. I'm not sure if the outer diameter matters at all, but it was roughly 42.8mm.

I hadn't considered the possibility of it being press-fit before. Are there any press-fits with these dimensions? To add to that, is there a possibility I could use thread-together bottom brackets?

I tried looking all over the frame to see if there's a manufacturing year or anything that might give a hint to the era, but unfortunately I couldn't find anything.

I still haven't gotten a response from the shop but it should come sooner or later.

Thank you all for your responses so far, it's been a great help!