Date: 1870                                                                          

Visible Markings: 17-19-1-0, RGF 50

First reinforce cypher of HM Queen Victoria

Material: Wrought Iron                                                

Mounting: On slide

Remarks: The RML 10-inch guns Mk I – Mk II were large rifled muzzle-loading guns designed for British battleships and monitors in the 1860’s to 1880’s. They were also used for fixed coastal defences around the United Kingdom and around the British Empire until the early years of the 20^th Century.

The weight markings are normally shown on British guns below the cascabel. The four figures on this piece reflect the larger weight and size in gun barrels cast from the mid-19^th Century onwards. The figures 17-19-1-0 therefore represents the Imperial ton (t= 2240 lbs) hundredweight (1 cwt=112 lbs), quarters (1 qr=28lbs) and pounds (lb). the weight of the gun barrel was therefore:

17 x 2240lbs. = 38,080 lbs.

19 x 112 lbs. = 2,128 lbs.

1 x 28 lbs. = 28 lbs.

+ 0 lbs.

= 40,236 lbs.

This ordnance piece is a protected monument under the Gibraltar Heritage & Antiquities Act 2018.

Link to: Two 10 in. 18 ton rifled muzzle loaders

Four figure weight markings on first reinforce.

 Queen Victoria cypher on first reinforce.

10-inch RML at Grand Parade.