HELMUT LANG SS1996 Zip Up Nylon Jacket
I purchased this from a website overseas several years ago.The two-tone collar is excellent.On Grailed, it's listed for $680 (approximately 90,000 yen), and I've seen this all-black version listed for $1000.I don't intend to sell it since it's not an item you can easily find, but please comment if you're interested.