Throttle control
The control pictured at yacht world looks like an early Morse/Teleflex combination control. I have a later model Morse/Teleflex (4 bolt mount) that works well on my boat.
I've seen a two lever configuration on lots of early Y25s.
There seems to be quite a few Y25's listed right now-- check out the pics for information,there seem to be quite a few variations out there.
Syntonos