when you have fitted it/used it.
buy a pair of tyres in 1986, leave them in the loft for 25 years, get them out of the loft and list them in the fs section. yes nos.
buy a stem from ebay that comes in a box, only fitted to see what its like, dont like it take it off and list it in the fs section. not nos. you fitted it, its not how it was bought all those years ago because it wasnt fitted all those years ago. even shops cant describe their demo stuff as nos when it comes time to sell, shop soiled/used yes but not new. theres a clue in the word there.
rant over.
buy a pair of tyres in 1986, leave them in the loft for 25 years, get them out of the loft and list them in the fs section. yes nos.
buy a stem from ebay that comes in a box, only fitted to see what its like, dont like it take it off and list it in the fs section. not nos. you fitted it, its not how it was bought all those years ago because it wasnt fitted all those years ago. even shops cant describe their demo stuff as nos when it comes time to sell, shop soiled/used yes but not new. theres a clue in the word there.
rant over.