Vintage abalone shell bottle opener

Vintage mother of pearl abalone shell articulated shell bottle opener. Tried to be very thorough looking over the bottle opener to find any missing pieces or cracks in the shells. Found a missing or chipped small piece of shell on each side near the tail fin. Found one small missing piece on the underbelly. I do not believe the missing pieces stand out but please look at all photos and video. I am pointing to the missing pieces with a toothpick. 7" length