Winchester SX-1 Production Date

Fairlane66

I recently purchased a Winchester SX-1 shotgun, Serial No M589xx. Can anyone tell me the date or year of manufacture and if it was produced early, mid, or late in the production run? I cannot seem to find this info anywhere. Thanks.

Fairlane66

Any ideas at all on the production date or where I might find this information on line?

Bert H.

There are no published production records or information for the SX-1 shotguns.

Fairlane66

Thanks, Bert. I assume Winchester might have that info on file, so perhaps I'll write and ask. Was hoping to surf it up on the web, but I'll have to return to the caveman method of writing a letter. Thanks again.