Using the chart here: http://doublegunshop.com/dgsnos5.htm

I am unsure of the date of production for 12ga s/n 1008xx.
Rotary extractor gun, if that is helpful.

1898 production ends at 45999
L.C. Smith - Hammerless (Non-ejector) - 8, 10, 12 and 16 Gauge 1898 45999

1899 production ends at 105210
L.C. Smith - Hammerless (Non-ejector) - 10 and 12 Gauge 1899 105210

Sixty thousand seems like a lot of shotguns.....

Can someone help me narrow it down?

Mike