WTB Early 29-2 "S" serial prefix

[Aleck]

I'm looking for an early model 29-2 produced between 1962 and 1967:

• 3 screw construction
• "S" serial number prefix
• Blued, 6½ inch barrel (other lengths considered)
• Diamond coke bottle target grips
• All original parts, no reblue (some honest wear OK)
• Original box would be a bonus, but not critical

Please let me know if locating this is reasonable.

Thanks very much.