They always say the same narrative, ive had for 10 years (never permed out of games)
Yeah right, first clash trial and all gone.

Im sure in 10 years of playing they did not poof, who you trying to fool here ? Next time say the truth, ive had them for 10 years on a offline mules not playing (thats more accurate)

Very good you came to that conclusion that seems accurate common sense skills come into play and determine there is a strong chance of it being unperm and bid/offer accordingly. Ask more questions if you are unsure. Unfortunately even items with good history can poof but here the OP made it clear the items were unperm it just seems like you were willing to gamble on the slight possibility of them at least not being a common dupe ID.