The BP stands for Ben Pearson, This was a Ben Pearson Hunter bow and the H probably stood for hunter. The serial number I can;t help you with. The bow is more than likely a late 60's to early 70's model. You can find more info at archery archives.com but that site is known for viruses. They are good bows and good shooters and originally sold for aroud 59.00 to 69.00 depending on the year.