It’s also a 52 1/2 🙂
I bought it second hand several years ago, but only know I’ll be using it.
I dismantled it to took off the rust.
Btw, I think I have to add an extra washer at the end of the thread screw to keep everything tight.
When I rotate the handle clockwise, it makes a strange sound, like if something is vibrating. I think it’s the thread screw that has some play at the end.
If I rotate if counter clockwise. doesn’t make any sound because the in this movement the thread screw doesn’t have any play.
Is yours tight at the end?