Hello jadegmh
This is a lovely set and looks as tho it could well be vaseline glass. This yellow vaseline is less common than the green and a particular interest of mine these days.
The "flats" are known as vertical (optical) ribbing and should be felt only on the inside. Are they ?
I believe the feet would have been separate components. I'm not sure if the ''pontil" can be counted as such but in any case, I believe, not so telling as the pontil on a piece which had no foot. I hope to be corrected on this if wrong.
A closer look at the handle, especially at the join would be interesting. A pic and comments could be helpful.
I don't feel able to judge yet where it may be from but I'm leaning towrads 30s -50s Bohemia / Czech but there are several other possiblilites. It would be helpful to know which country you are in to help discount some of those possibilities.
Peter ....still in A'dam