25. The holder of a merchant’s or operator’s licence may not sell or otherwise transfer an amusement machine for which duties are prescribed, whether in operating condition or not, without furnishing the purchaser with a dated and sequentially numbered invoice indicating the purchaser’s name and address, a description and the serial number of the machine, and the date on which he takes possession thereof.
The holder shall keep at least one copy of the invoice, and he may not dispose of it without authorization in writing from the board.