These unique numbers can be verified on the Beckett website. I have several of these almost identically autographed items, and the pictures shown represent one of them. Please note the unit you will receive will likely have a slightly different autograph placement and or have a different certificate number than the actual unit pictured.
But most pieces signed are nearly identical. This will come with a Beckett Witness Authentication Certificate Card and matching sticker on the item. This means that a Beckett employee was present and witnessed this signing. The certificate can also be lookup up on their online database. The item "Star Wars Emperor Darth Sidious Ian McDiarmid Signed 11x14 Picture Beckett PSA" is in sale since Sunday, December 31, 2017.This item is in the category "Entertainment Memorabilia\Autographs-Original\Movies\Photographs". The seller is "thedealleader" and is located in NY. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay, Russian federation.