Larry: There is no doubt that the 1933 16ga is a special order, and I am sorry that I wasn't clear about that. I bought the gun because it was a field grade with ejectors, a somewhat unusual configuration. It wasn't until later, after some dis assembly that I discovered the chamber markings and that the receiver had been drilled in several places to remove weight, and that the barrels were older Belgian made tubes. Some old bird hunter knew exactly what he wanted and had it made up to the specs he desired.I have a friend who has an LC Smith with the lightening holes drilled exactly the same as mine.