A cabinet used to hold the ‘letters patent’ for granting Douglas city status cost the council £13,318 plus VAT.
The documents are on display in the city hall and were given to the council by Queen Camilla on behalf of King Charles.
Previously it was revealed that the local authority spent £5,000 on her visit in March and wasn’t given any financial support from the government.
An earlier display cabinet for the documents was £390.
Repairs on Peel Power Station to get underway
Manx Care doctor survey to be discussed by Tynwald
Weather warning for snow tonight
MHK queries safety at primary school in Ballabeg
Gales put two ferry sailings at risk tonight
Should the Island throw a birthday party for Barry Gibb?
Warning issued over icy roads
High ground could see 4 inches of snow on Saturday night