Telephone used in the White House during the Reagan, George H.W. Bush and Clinton administrations. Vintage desktop touchtone telephone unit bears a White House Centrex label on the directory plate and a label reading, ''NOT SECURE / DO NOT USE FOR / CLASSIFIED OR SENSITIVE / INFORMATION'' under the receiver. Faceplate lists extension numbers for Staff Advisor, Press Advisor, Press Office, WHCA Office, Communication Center, Radio Room, and Operator. Second warning in red caps reads: ''THIS IS A NON-SECURE TELEPHONE''. Code stamped to bottom of phone indicates Western Electric model number 2500. Light wear, overall very good condition.