Do NOT, I repeat do NOT reblue that gun. As more and more time passes since Colt closed it's factory to DA revolvers, they're getting more and more scarce and more and more valuable. The one downside to your particular gun, is that the Police Positive Special was one of Colts most made revolver ever, topping 750,000 total.
Your gun was made in 1909. The police positive line was started in 1905 with the Police Positive 38 (38 Colt cartridge, smaller than the 38 S&W special). The police positive .32 was introduced in 1907, and the police positive special in 1908
Now, as to the grips, there is a posibility that they are original grips. I couldn't see the rampant colt medallion that well. If it's gold colored, it's aftermarket, no two ways about it. If it's silver, that's consistant with the original. The checkering looks worn and the ridges not sharp, also consistant. I can't find out when wood grips started being used on that gun. I do know that the Detective Special, which came out in 1927, had wood grips, and the Detective Special is a Police Positive Special cut down to a concealed carry size. Without being able to see the grips up close, or a really good set of pictures, I can't tell one way or the other. They may be original, they may be aftermarket grips put on in the 60s or 70s and have been worn down since then.
Either way it's a great addition and, obviously, don't shoot 38special +p rounds through it as the frame from that time won't take it.
Pittsburgh Pirates- 1st place NL Central 7/15/11
They've got us surrounded? Good. Now we can fire in any direction, those bastards wont get away this time
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