I am indeed referring to the large Ming bottle vase.
How can anyone be absolutely sure, apart from the obvious designs, that Michael didn't make them while he was at Mdina? There are no records aside from photos of the stock shelves of what was made at all. Earth tones is considered post Harris, but he developed it while at Mdina, I have an experimental tricorn in that colorway with a broken pontil.
What im trying to say is that it's not beyond the realms of credulity that Michael made a piece like this while he was there, the signature is absolutely right. I've seen hundreds of Mdina pieces in the 19 years I've been a dealer and collector, and all manner of signatures both genuine and fake. This for me is a genuine signature, it's been done in a diamond point etcher, not vibro pen (though sometimes this was done by MH), it's fluid, has the correct form and style. If you look at Mark Hill's book on Michael Harris, the Mdina singatures shown on page 137, the ming bottle signature is almost identical in style and form.
I also saw in February at the National Glass fair in Birmingham a MH fish vase with a signature like this one done in diamond point and absolutely right. no question. Perhaps some of you saw it if you attended?
I agree that buyer beware is absolutely relevant, particulary more recently. The number of fake signatures I've seen this year alone is well into double digits. This Ming bottle however is not one of them, not to me, but each to their own.