Sea Gypsy had the same Morse single lever shift/throttle control as pictured in earlier posts. Worked great except the neutral lock-out was inoperative. As a result, I was compelled to start the engine at dead idle. Works OK in warm weather, but not in cold. I tried & tried to find info on this controller but never found any. Only recently, reading these posts and seeing the pictures confirmed it was indeed Morse.
I recently replaced it with a Vetus model SISCO. I am VERY satisfied with the replacement. Still single lever/dual function. Looks great too! Consider it a possible alternative/upgrade.
Added bonus:The Vetus SISCO will push or pull depending on the engine requirements.