From that we would presume they are something over 200 Amp.
But, we are unable to give specific specs.
They measure about:1 7/8" from tip to the back end of the body4 1/2" from
there to the cable tab end3/4" dia stud
The Tabs are for a 5/16 bolt.
The closest thing we have found in this physical size is 600Amp
The SCR is longer than the rectifiers but the same stud dia.
The only numbers we can find are shown in the pictures.
3 of the devices have them and each of the metal brackets have
the same number engraved as seen on one of them.
We have done a test on the rectifiers and they meter out correctly.
No capacity tests have been done.
If you are wanting to build a high current supply these might be just right for you.
Thanks for looking!