Im bemused as to the writers 'suspicions', or is he merely attempting to cast dispersions of a possible competitor. Usually keyboard 'warriors' such as this have their own agendas.
Im also interested in the writers forensic qualifications, and experience? Does being a member of UACC qualify one to make judgements and opinions, and then express them on a public forum? Im not so sure....
I am in no way associated to the seller you name Steve. I do not sell items at present but collect and look out for anything local that is questionable and have contributed to this forum for some time with many items.
I can only guess by your location and the fact you just joined up that you are indeed the seller of this Superman item?
The item does not look authentic and I was asking for opinions. Please feel free to prove me wrong on this but it looks suspicious and unlike signatures of the individuals on the item.