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The escutcheon of 
	
	Lopburi shows
Phra 
Narai and in the background Phra Prang Sahm Yod, the ‘Sanctuary with the 
Three Towers’. It refers to king
Narai
who in 1664 fortified the city to be used as an alternative capital when
Ayutthaya
was threatened by a Dutch naval blockade. 
						
						
						
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