Crowned king initial (IhnS) over mint letter (L) With or without secret symbols around the crown (See comments)
Obverse script
Latin (uncial)
Obverse lettering
ADIVTORIVM NOSTRVM
IhnS
L
Reverse description
Coat of arms of Portugal in a quatrefoil
Reverse script
Latin (uncial)
Reverse lettering
IhnS DG
REX PORTVGAL
Edge
Mint
Mintage
ND (1385-1387) º
L º - AG#J1 18 (Secret symbol on right) - ND (1385-1387) º
L º - AG#J1 19 (Secret symbol on left and right) - ND
(1385-1397) L - AG#J1 15 (No secret symbols) - ND (1385-1397) º
L º - AG#J1 17 (With or without secret symbols ) - ND (1385-1397) x
L x - AG#J1 16 (No secret symbols) -