Per the Standard Catalog of Smith & Wesson, 3rd ed., pages 170-171:
05 - 5 shot
AD - Double-Action Only
SM - Small compact frame size
GR - Rubber grips
BO - One-piece barrel
SF - Fixed sights
SB - Black blade front sight
FA - Alloy frame
CC - Carbon steel cylinder
ZB - Blue finish
Per the Standard Catalog of Smith & Wesson, 3rd ed., pages 170-171:
05 - 5 shot
AD - Double-Action Only
SM - Small compact frame size
GR - Rubber grips
BO - One-piece barrel
SF - Fixed sights
SB - Black blade front sight
FA - Alloy frame
CC - Carbon steel cylinder
ZB - Blue finish