I recently ordered in two of these above-shown latch parts from Hardware Elf and they DID NOT WORK. The latches do NOT fit into the original Negrini combination locking mechanisms of the new style Perazzi cases.
Be care what you buy, or know exactly what to buy. I miced what I had to repair and ordered what was listed on the H/E site, but, as stated, they did not work.
Steve W's above photo clearly shows the locking part of the latch is too large to fit the Perazzi lock slot.
WW