Hello,
I noticed that you recently bid on and won a production sheet from 'Aliens' from the seller 'propcatalogs*com'. I won the same item from this seller and can confirm that they are fakes. I had mine assessed by a reputable auction house and a film memorabilia consultant in the industry who informed me that they were simply 'copies'. You will find that this seller mis-represented as being 'original hand signed' articles. I am claiming a refund through Paypal.
It is really none of my business... but I couldn't help warn you that the one you purchased is most likely to be a fake too.

If you need further details regarding this matter please do not hesitate to contact me.

Kind Regards,
Andy