This is an 8x10 inch The Big Bang Theory (2007–2019) television photo signed in-person by Bob Newhart as Professor Proton (Arthur Jeffries). A highly desirable modern television collectible tied to the long-running hit sitcom, it features his memorable guest role as the beloved children’s science show host, a character that became a fan-favorite part of the series’ later seasons. Deceased. A late icon of comedy and television, Bob Newhart is also known for The Bob Newhart Show (1972–1978) and Newhart (1982–1990), two landmark sitcoms that highlight his enduring legacy as one of television’s most influential comedic performers. This item is certified authentic by Beckett Authentication Services (BAS) Certification number – T26786