If I could see some better pictures of the markings I might be able to tell you who made the gun. I can tell you that it was imported by John Jovino & Sons.
Also the best way to know what chokes you really have now! is to measure it.
Best
John Boyd
Quality Arms Inc
John,
Here's another picture of the barrel flats:
Also, if you detach the pictures of the watertable shown earlier in this thread and blow them up, there's a lot of detail there. This forum downsized the pictures. Any info you provide would be helpful. PS. I found somewhere else that the star over PSF mean it was proofed at 1020 Bar. My understanding is that would translate to pounds per square inch of over 14,000.