Celica Forums General Discussion Engine and Performance 5-speed manual gearbox

I only partially qualify to join this forum - my Morris Minor has a 5-speed Toyota gearbox which I was told came from a Celica.
The time has come to top up or change the oil, but I have no idea where to put what. Could someone kindly confirm that this is a Celica box and tell me what sort of oil to use and where the filler is?
Incidentally, whatever it is the gearbox is a joy to use and perfectly matches the 1300cc engine.

5-speed box

I have been searching and did find what looks like the same gearbox for sale. It is advertised as suitable for a 2T or 3T Celica and a T40 Corolla, but no year of manufacture stated. I have also found discussion about what to put in gearboxes, oil or ATF, but I am not clear whether this applies to my gearbox.

I have been looking for numbers on the box, to no avail. There is " 1 - 1 " stamped at the rear of the right side and what looks like a Japanese character(s) or logo further forward on the right side.

David

Well I now know it is a Toyota box. Those Japanese characters stamped on the side translate to Toyota.
David