I have a Birmingham NSL 19X60 lathe. Previous owner crashed it and tore up one of the change gears. I'll give overall details and can provide more specific details where needed.
I'm not a gear expert so I'll post what I think I figured out.
132 teeth
total width of gear 19.05mm
Pitch circle diameter 198mm
outside diameter 201mm
MOD 1.5mm
Total depth of tooth 3.375mm
Center bore can be whatever you need to cut the teeth with. I can finish machining the gear. Just need the teeth done right.
I can provide pictures of the old gear.