The coin in the photos is the one you will receive. The 1970 10 won coin comes in brass (a lot more common, still rare), and bronze (very scarce) varieties.

The bronze variety of the 1970 10 won can be distinguished by looking at how the coin tones and looking for "print-like" marks. These marks be seen at 2 O' clock on the obverse and 10:30 O' Clock on the reverse. 

The print-like marks are not a fault. See Professional Coin  Grading Service or Numismatic Guaranteed Corp graded coins of 1966-1969 10 won coins (all bronze). Many, actually most, that are shown in the "sixties" UNC range, have a few dark spots and print-like marks. 

If you have doubts, ask yourself: does this coin look more like a 1966-1969 (all bronze) or does it look more like a 1971+ 10 won (all brass)? 

Although it is more obvious (and better looking) in real life, returns are of course, accepted for this and all my listings.

Will come in a 2x2 if not already pictured.

Feel free to message me with any questions.

Please check out my other items as well.

Thanks for looking!