Jérusalem cross
I mention the four "Theories" which the Rev. T. E. Dowling states to be "current" in Jérusalem :
1. The central and larger cross represents the Latin Kingdom of Jerusalem, whilst the four smaller ones (in the four corners) denote the four tributary principalities of Edessa, Antioch, Tripoli, and Kerak.
2. The five crosses represent the five principal nations who took part in the first Crusade: France, England, Germany, Italy, and Spain.
3. The five crosses are the sign and seal of the Franciscan Order, the traditional custodians of the holy places, and denote the five wounds of Christ and of St. Francis.
4. Though the Jerusalem Cross was used as their seal and arms by the Latin Jerusalem Kings, and is also found on Crusading and Cypriote coins, yet the emblem is more ancient than the Crusading time, and the Crusaders only adopted it, finding it in the country or neighbourhood and answering to their ideas and purposes.
That the form of the Jerusalem Cross, with four crosslets or some other marks or figures in the four corners, is much anterior to the Crusading time, is proved by the history of the cross in general, which begins in very ancient times.
This cross is present on crusaders coins, for exemple on Lusignan Kingdom of Cyprus. Henry II. King of Cyprus & Jerusalem, 1285-1324
Your
coin is from Felipe IV of Spain, rex of Napoli (and Sicilia) - Legend : PHILIP IIII DG - NEAPOLIS REX