Try Blue Book of Gun Values.
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.
2006 if it is using the Browning date system
You will have to contact Miroku to find out.
To determine the manufactured date of a Charles Daly Miroku shotgun with the serial number 559721, you typically need to reference specific production records or databases, as Miroku shotguns were produced in Japan and the date of manufacture can vary by model. Charles Daly often used serial numbers to indicate the year of production, but the exact details would require access to Miroku's production records or a knowledgeable firearms expert. For precise information, contacting Charles Daly or a firearms historian would be advisable.
You will have to contact Miroku
stirling miroku shotguns were manafactured by miroku for fuller firearms sydney Australia in the 1960s and 70s they were overlooked at the time but now are considered a good gun
If it was made for Browning you can tell by the serial number.
No published sn data I know of
No published sn data.
The letters NZ in the serial number indicate that your Miroku made Browning was made in the year 1991.
YES
I believe it was known as the "Black Shadow".