Very rare Scottish Hammered gold

Hello all, I've just joined and this is my 1st post 🤘🤓. I recently found this coin and I am looking for more information on it.  I have seen some other examples online but none have the same combination of fleur-de-lis and shield and crown above St Andrews head as mine.

Thanks all

 I did find a picture of similar, but yes it had a fleur either 

side of the crown. General information seemed similar though > 

 Obverse: Crowned Scottish arms, crown with hatched interior, [crown] either side of shield with linear circle around, 

beaded circles and legend beyond, initial mark crown, 

IACOBVS DEI GRAxx REXxx SCOTTORVm++, 

double saltire stops terminating in a double lis stop, 

 Reverse: Saint Andrew on saltire cross to rim of coin, crowned lis either side, legend surrounding with 

beaded circles, initial mark crown at top, 

X PCxx REGn ATxx XP C VInCIT X P, 

 The abbreviated obverse legend translates as "James, by the Grace of God, King of Scotland" and on the reverse "Christ reigns, Christ conquers, Christ" the legend is seemingly incomplete for this denomination as the last C of Christ is not present nor the word "imperat", which when seen on other coins of the medieval period complete the legend as "Christ commands." 

 King James II of Scotland was born on 16th October 1430 and was crowned at Holyrood at the age of 6 on 23rd March 1437. He later married Mary of Guelders at the age of 18 in Holyrood Abbey on the 3rd July 1449. In late 1455 he proposed a joint action with France against England but support never appeared, and after ravaging the north of England he concluded a peace treaty with King Henry VI in 1457. He was later killed when laying siege to the still English held Roxburgh castle on the 3rd of August 1460 by the accidental exploding of a cannon. 

Welcome to Numista!

It fits the description of S 5221 except for the crown mintmark reverse (saint side):

“As 5220 but mintmark crown obv., cross rev.  Crowned lis by saint.”

The description of 5220 has for obverse:  “Crowned shield between two small crowns."

“Mules” (coins with obverse of one subtype and reverse of another) are known.

Obverse is close to this example, but legend does not match exactly: https://www.acsearch.info/search.html?id=383372

Reverse is same as this one I think (maybe even a die match?):  https://www.acsearch.info/search.html?id=10389944