In the order administration dated 2 November 1888 was
the order for account of the Dutch Department of War described as the delivery
of 90-10cm mortar carriages of each ƒ 310, totally ƒ 27.900. Totally contracted
price ƒ 27.900. Building costs totally ƒ 22.423,74 (material ƒ 6.255,74, labour
ƒ 10.155,47, 60% expenses ƒ 60.12,50) resulting in a profit of ƒ 5.476,29.
Source
Archive Kon. Mij. De Schelde, Vlissingen, Netherlands 1875-1970
(Municipality Archive Vlissingen T.214.1216).
