All depends on condition, 1929's are rarer for police, and being matched, in america, if they were together and shootable. To me, probably $1,000 ($150 for the holster, $750 for the pistol, $100 for matching holster and gun). If the gun is not shootable, then in america, $200-$300 for the gun (some people would part it out) and $100-$150 for the holster.
Thinking of selling?
Ed