Well the last one was 42c, and Henderson paid just under 45c.
They have the cash to spend so IMO they will pay the 55c.
I am putting in bids at 45c and 55c but only about 20% of my holdings, the size of the Henderson investment (5 Mil GBP) indicates that the books must be pretty good.
TSM could be providing financial services across Europe within a few years.