Any boiler having been inspected and declared unsafe by an inspector shall be stamped by the inspector with an arrowhead stamp having an overall length of one-half inch and width of three-eighths inch on either side of the letters "XX" and the letters "CONN," as shown by the following facsimile, which will designate a condemned boiler:
Any person, firm, partnership or corporation using or offering for sale a condemned boiler for operation within this state shall be subject to the penalties provided for in section 29-243 of the general statutes.
Conn. Agencies Regs. § 29-232-21