Wow, that is a great looking SAA New Frontier.
Please post more detailed pics in the Single Action Army section of this forum. You and your gun will get much more attention there. Also tell us the serial number, so it is possible to determine the year it was build.
You should invest 100.00 $ and order the Colt Archive Letter at the following link. If the engraving is made at the Colt factory the letter will be 200.00$ but it increases the value of your gun substantial.