Hello Tickman ! Pam187
is the only steel rep i know . Pam202 and pam225 rep are made of steel, but gen is titanium, but the probability of getting them is not great.
I dare to suggest that the PANERAI consider the 47 mm models to be too heavy if they are made in steel, because 44 and 42 mm., Submersibles in the steel case are also common.
I think 44mm., Pam064 / pam087 / pam243 will be heavier than 47mm., Titanium case.
However, they will all be with a Cyclops date, which, as I recall, you did not want...