Bit of a revision of my original post:
The pitcher was designed in 1953, and is shape/pattern number 14581. It was in production, at a best guess, until 1971.
Emmi - nope, didn't get any email. I've been having a few problems with it of late, with things either not arriving or being sent to the spam folder.
Patrick - still holding on to the duck for the time being. But I'm hopefully moving later in the year, so may part with it to free up some funds.