Here is a brand new metal adapter made by Hama. This allows you to attach a standard screw-in cable release to your Yashica TLR camera. This will fit any camera that has a threaded ring around the outside of the shutter button.
The models I know this fits are 
Yashicamat EM
Yashica MAT LM
Yashica A
Yashica C
Yashica D
Yashica 24
Yashica 635
Yashica 44A
Yashica 44
Yashica MAT 124
Yashica MAT 124G
I'm sure I missed a couple but you get the idea.
If you need a cable release to go with it I have them listed as well.
