Autographed by Bill Mumy, June Lockhart and Jonathan Harris (Will Robinson, Maureen Robinson and Dr. Zahary Smith respectively) We are unable to get them authenticated due to current regulations, but we guarantee every autograph we sell to pass third party authentication with CAS. If you want to avail yourself of the guarantee please notify us BEFORE we ship the item. Once an item leaves our possession the guarantee is void, because after we ship we have no way of knowing if the item in question is indeed the item we sold.