Webley Patriot Date Made?

Are there production records that show when it was made?
Webley Patriot
Webley & Scott
Birmingham England
Ser # 906500
.25 caliber
There is NO value to a dated Patriot. Unless it’s number one or the last. There were thousands made as well as the Kodiak for Beeman .. As far as I know records from Webley went to auction when they went into receivership