Broken 1502 Bracelet

Hi,

I am new to the site so apologies if I have not listed this correctly. I have my father’s old Seamaster up and running again and would like to refit the original bracelet but have found the link (in the middle of the photo) is broken on one side. Have trolled the net but am unable to find this part (not sure what you call it). Any help advice would be much appreciated.

Andy