If you are a business based outside of Arkansas, you will need a Certificate of Authorization to be able to do business within the state along with an official seal approved by the State Board of Registered Engineers & Land Surveyors. Our Arkansas Business Authorization Stamp Seal is compliant with Board regulatory standards. Order yours now! This stamp is available in 1.5" or 2" seal sizes also as an embosser. Please provide the following information: - the name of the company/partnership and - the Certificate of Authorization number below.