This skillet is one we had before starting to buy on Ebay. It has a inset smoke ring with a reinforced edge and double pour spout. I am confident this is a Birmingham Stove and Range Co. 1960 Century Series skillet. I base that on info given at CastIronCollector.com
The following is extracted from that page accessed via the above link.
- All BSR
– If heat ring, unbroken and inset
– Ridge on bottom of skillet handle does not flatten out at sidewall of pan - 1950s “Century” series
– Small pour spouts
– ¼” high size number above diameter in inches at 6 o’clock, e.g. “NO.8” “10-5/8 INCHES”
– Lids have dimples in a radial pattern for basters, size number and diameter incised on underside - 1960s “Century” series
– “Made In USA” added at 12 o’clock
Markings on Jeff’s Skillet
At 12:00
MADE IN USA
At 6 o’clock is:
NO.5
8 1/2IN