If there is no mention of a blank baseplate on a presumed Tye vase in my book it simply means that I do not know nor wish to speculate. Sometimes somebody's 'thoughts' seem to stick and then become 'truths' and I would rather not go there.
That does not mean that there are no 'thoughts' in my book at all but only if I have something to go by. In that case I present possibilities which may be considered or rejected.
Patricia