Hello Michael,
Panama does not issue international licenses, to the best of my knowledge. Local licenses are available to legal residents of Panama; you must be in country to apply. Find out more/confirm this via a Panama legal professional such as:
The Law Offices of Rainelda Mata-Kelly
Suite 406-407, Tower B, Torres de las Americas
Punta Pacifica, Panama City, Panama
Local tel: +(507) 216-9299
From the U.S. or Canada tel: (011 507) 216-9299
Email: rmk@mata-kelly.com
Website: http://www.mata-kelly.com
Hope this helps.