There are a number of listed artists with the surname Puente. Your painting might be by any one of them. If you believe that you are in possession of a valuable painting by one of the artists, and you are hoping to sell it, then I recommend contacting an auction house. Send an email query, and if the auctioneer thinks you have a potentially valuable item, they will invite you to bring it to them for their assessment. Alternatively, you could approach art dealers in your neighborhood for their advice. It's always worth getting offers from more than one art dealer, as they have a living to make, and there will inevitably be variation among possible offers.