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10-100 USD or so
That would be an earlier F.lli Pietta
1873 colt single action army revolver
Impossible to date it without knowing who made it and a detailed description of all markings.
Estimates start at the 250 million BP mark and go as high as 500 million BP
are you sure it's not BP for black powder ??? it means barrel bushing, the pistol is a transition between colt 1911 commercial and series 70. your pistol was probably made in 1969.
If the author meant BP as British Pharmacopea it is worthy for pharmacology, pharmacies and for information about drugs. But if the author wanted to say: British Paetroleum, I have no answer! BP is also British Public, British Pubs, British Prostitutes, but they have no role and place in the Medical Terminology section!
Today June 9 2010: 500.00 BP is worth 726.30 USD.
As of July 2014, the market cap for BP p.l.c. (BP) is $157,930,682,942.25.
BP is a fuel company to find more google "BP wiki"
BP stands for British Petroleum.
The symbol for BP p.l.c. in the NYSE is: BP.