Might be a Export model with the spinning disk added later in it's life?.
Also has the 3 coin slot door which is unusual in US machines, or is that just modern stuff?.
If the disk has been added, is it possible to add speech as well?. Not really up to speed on Gottlieb sys80, so dunno.
Edit: Bit of detective work shows that the machine was exported to Germany "1 Mark" "2 Marks" etc on the coin door.