This is a discontinued San-X letter set. It says "2000," so it's likely from about 25 years ago. "PALETTE" Simple*Works SAN-X For standard mail Letter paper (4 designs) 48 sheets, envelopes 24 sheets Letter paper size: 14.2 x 18.9 cm MADE IN JAPAN The envelopes are transparent so you can see the design of the letter paper. It was stored for a long time in the warehouse of a shop run by my grandparents, so it is an unused item that has never been in anyone's hands ☆ As this is a retro item, there is some fading on the edge of the top letter paper (photo 7) and the product label sticker is slightly torn (photo 8). Please understand this before purchasing m(_ _)m ☆I am also selling other discontinued San-X stationery. #cottonrose_sanx ☆Other letter sets here↓ #cottonrose_letter ************************************* ☆I am also selling other Showa-era retro stationery and novelty stationery items. #cottonrose_retro If items can be bundled, I will offer a small discount, so please comment before purchasing (^-^) ※As I am also selling on other flea market apps, I will prioritize the buyer who purchases first. Also, I may suddenly withdraw the listing for this reason. Please understand. #PALETTE #LetterSet #SanX #SanX #Showa #Retro #Stationery #Stationery #VintageItem #Rare #Scarce #Heisei #Discontinued #LetterPaper #Envelope