Any person issued a Master Limited license by the Board will receive an electronic downloadable license which is to be carried by the licensee, and, upon demand, the licensee shall give the number of the license and/or the license to any authorized person. Any contractor issued an Electrical Contractor's Limited license by the Board will receive an electronic downloadable license which shall be displayed in a prominent place at the place of business and, upon demand, shall give the license number to any authorized person. A duplicate Master Electrician, Limited and/or Electrical Contractor, Limited license may be obtained upon application and payment of a fee as prescribed in the Table of Fees to replace one that has been lost, defaced, or destroyed. Any person using a vehicle exclusively in the performance of electrical work in the County shall have a sign on the vehicle displaying the name and license number of the Electrical Contractor, Limited, with letters and numerals not less than four (4) inches high and one-half (1/2) inch wide. Any person using a private vehicle in the performance of electrical work must display in the window of that vehicle a sign, not less than twelve (12) inches wide and sixteen (16) inches long, which contains the name and license number of the Electrical Contractor, Limited.