Had a brief look at info stored on my other computer (I believe the info came from an Ex employee of BSA ?) but not entirely sure of the source.

During a game fair at Tatton Park,(Knutsford) 1982, BSA launched a commemorative rifle (The Centenary rifle) to commemorate 100 years of their 'Piled Arms' trademark that was launched in 1882. (not the start of the company/ production which was in 1861.)
Numbers of rifles were 'strictly controlled' to 1000, all were manufactured in 1982 and had the etched 'One of a Thousand' on top of the air cylinder, the rifle came with a number of extras and a signed certificate bearing the serial number of each rifle. The serials were C0001 through to C1000.

264 in .177 calibre
736 in .22 calibre

This will be information I picked up from the internet, there is probably more out there!


ASM