Check the listing for details. Optima 24K Gold strings Acoustic guitar strings set 1747L 012-052. Condition: New. Listed at 24.98 USD. Dear ALL buyer We can give Tracking# by Korea Post we don't want any trouble with our Buyer. To be frankly, we are beginner for ebay selling. but We have a store in Seoul,Korea for 20 years. I trust tracking history by Korea Post. We are not responsible Customs problem or Shipped done but you are missing. We Never deceive Buyers!!! Best regards Bandomusic! 24K GOLD ACOUSTICSThis series reflects our over 90-years tradition of string manufacture. The result is a string of unmatchedpremium quality. All strings are coated with real 24 carat Gold and are therefore completely insensitive to tarnishing or corrosion. Their durability is, compared to normal strings, up to three times higher and they are suitable for people allergic to nickel. GOLD STRINGS are characterized by a brilliant sound and the typical SOUND OF GOLD, which also was loved by Frank Zappa. And of course, also Brian May plays on his guitars OPTIMA GOLD STRINGS.