Master Internal Control and Proud Preston 22. A valid American Express card should have... a duplicate account number on the reverse side, and number that begins with 43 or 47 duplicate account number on the reverse side, and a number that begins with 37 signature panel with wavy blee d begins with 4 or 5. a plain white signature panel, and a card number that 34 or 37. 23. Company policy for company issued employee credit card permit employees to charge personal items on the automatically deduct the amounts) from the emp a company authorized personal items to be card and require and require prompt reimbursement from the permit personal items to be charged on the end automatically deduct the amoun credit card held on the earth b. permit company-authon ployee Nd on the card, the emplo