Are these strings for a YAMAHA Dynamic Guitar, which were made almost 60 years ago? The package says "DYNAMIC GUITAR STRING." I'm not sure exactly when these were from in the Showa era, but would you like them for your collection? "DYNAMIC GUITAR STRING" ☆YAMAHA ☆Made in Japan ☆5A, 6E strings x 1 each, set of 2 These are "unused" items that have never been in anyone's hands, as they were stored in a small shop run by my grandparents. Due to the age of the product, the bag has some stains. Please understand. ※Please refer to the photos for the condition of the strings (there are areas that look like discoloration, like rust. There are multiple areas, so the discoloration may differ slightly from the photos). Since these are very old items, I don't know if they will affect the sound. If you have any questions about what you can see, feel free to ask♪ ☆I can also send multiple sets if you wish. In that case, I will discount the shipping cost (the degree of discoloration will be more pronounced than on this item, so I will add photos). *********************************** ☆In addition, I am selling other discontinued guitar strings, ukulele strings, harmonicas, and other slightly retro but unused musical instruments. #cottonrose_music If combined shipping is possible, I will give you a small discount, so please let me know before you purchase (^-^) ※I am also selling on other flea market apps, so I will prioritize the person who purchases first. Also, I may suddenly remove the listing. Thank you for your understanding. #Dynamic #DynamicGuitar #ClassicalGuitar #Acoustic #Folk #Guitar #Strings #DYNAMIC #yamaha #Rare #RareItem #Discontinued #Yamaha #Vintage #Collection #MadeInJapan