Sanja

Thank you so much for the feedback! I will definitely send the coin to NGC for grading, and post the result once I have it back. I think the patina in the photos above may look odd because I took them with a camera flash on, in hope of getting a better surface detail. The actual color is more of a warm yellow, and both sides look the same. I am attaching a photo I took without a flash -- the color still doesn't look right, but I think the patina is much more obvious. Can't believe how different the photos with and without the flash look now that I see them posted!

The coin has been in my possession for 51 years. It has been stored safely, and I am sure that no cleaning has been done to it during that time. I inherited it from a great-aunt, and I think that she has also had it in her possession for a long time. Not sure if she had attempted any kind of cleaning, though. 

Thank you so much for the quick response!

I have inherited this coin from a relative many years ago, and would like to know if it is in a good enough condition to send for grading. An approximate grade would also be appreciated.

Many thanks in advance.