Invalid 76561198062098142 (player?)

Possible scammer (Caution):
steamID: player?
steamID32: STEAM_0:0:50916207
steamID64: http://steamcommunity.com/profiles/76561198062098142
customURL:
steamrepURL: http://steamrep.com/profiles/76561198062098142

Victim:
steamID: Pipacs
steamID32: STEAM_0:0:14578893
steamID64: http://steamcommunity.com/profiles/76561197989423514
customURL: http://steamcommunity.com/id/Pipacs
steamrepURL: http://steamrep.com/profiles/76561197989423514

I opened a trade thread on steamtrades.com. He wrote to me, that he got a Half-Life 1 Anthology cd-key bought from cdkeyshere, but I couldn't find it on that website. (btw it's very suspicous, that he got that kind of old cd-key)
I am not got scammed, but I think he/she is a possible scammer.

Code:

2012. szeptember 3.
20:53 - Pipacs: hi
20:53 - Pipacs: who r u?
20:53 - player?: hi
20:53 - player?: do you have Portal 2 gift?
20:53 - Pipacs: yes
20:53 - player?: interest in Half life Anthology Key \ Cs 1.6 Key \ Magicka gift \
20:53 - player?: ?
20:54 - Pipacs: anthology key?
20:54 - player?: yes
20:54 - player?: bought in cdkeyshere
20:54 - Pipacs: no sry, i need tradeable/giftable
20:55 - player?: ok
20:55 - player?: gl.
20:55 - Pipacs: how did you find me?
20:55 - player?: stea
20:55 - player?: steam trades
20:55 - Pipacs: next time please write there first before add me
20:56 - player?: ok
player? most Offline.

Nothing occurred here. I will mark as invalid and then archiving for future records in case something happens.