Part number for crown needed

Hi guys,

Yay a tissot forum!!! So happy that we got this sub forum. Thank you to the management for this.

I have a 1966 tissot pr 516. I need to know what the part number for a replacement crown is.

I couldn’t find anything and neither could AI.
I have been restoring it bit by bit and am ready for a crown.

Any help would he appreciated.
Also is this the right buckle? I had it in my spare parts and it fits the dial font but I don’t know if it was for this model.

The movement is the 784. The omega equivalent is the next version made a few years later in the early 70’s. 2481 or something like that.