Short Oiled Rubbed Bronze Base Part Number B12. Comes in Tall PN A12 and short (B12R) and tall (A12R) Ribbed as well.
Don't forget the candle cap Part Number CAP12
Tall Brushed Nickel Base PN A1
Short Brushed Nickel PN B1
Tall Oil Rubbed Bronze Base PN A12
Hammered Tall Oil Rubbed Bronze Base PN A12H