No way to tell from the sn. You will have to contact Miroku
You will have to contact Miroku to find out.
Possibly if it is a Browning made by Miroku.
You will have to contact Miroku
The letters NZ in the serial number indicate that your Miroku made Browning was made in the year 1991.
Sorry- no public records. You can try contacting Miroku.
Miroku guns made under their name does not have serial info published. Winchester, Charles Daly and Browning have all been made by Miroku in the past. Do you have a model?
If it was made for Browning you can tell by the serial number.
No sn data outside the factory
Virtually impossible to tell a model from just the serial number.
Basically impossilbe to tell a model number by the sn.
To date your BC Miroku shotgun with the serial number 313957, you would typically reference the production records of Miroku, which can be found through firearm collectors' guides or Miroku's official communications. Miroku shotguns were primarily produced for the British market in the mid-20th century, so your shotgun is likely from that era. For a more precise date, consider reaching out to Miroku directly or consulting a firearms expert or appraiser who specializes in vintage shotguns.
I believe it was known as the "Black Shadow".