The version without the big PANERAI writing is the PAM00254. Those things are absurdly expensive for what they are. They run about $1800.
But PAM254 is a table clock not a wall clock. Wasn't there a wall clock with just the dial in the porthole (PAM174 or PAM255? not sure...)
I agree the prices are stupid for a battery operated clock !!
I'd much rather save $$$ and get an Atmos - these things are truly fascinating