Ah!
Ok, that explains it better to me, Thanks!

The cheaper 'export' vases seem to have had the 'flame' treatment, the middling ones are ground and chamfered, much like, say, a Whitefriars coffin vase
Only a few, and I suppose where the design and cost demands it, seem to be tooled and hot worked to form a rounded lip.
Incidentally, the only Riihimaki vase I own with a pontil mark is the largest size of Sun vase