100-800 USD
100-1000 USD depending on specifics
They can only fire the .455 Webley ammo. Don't attempt to use any other cartridge in this revolver.
check with Buffalo Arms.com for re-loads
.455 calibre MK VI 1916 Webley revolver
Firstly, value depends on a number of things; a) General condition of the revolver, b) Where you are in the world, local rarity can increase values as can local gun control laws (conversely decrease the value) In Australia, Webley Mk VI average from 450 AUD for an average condition through to 1200AUD for an excellent example. Bear in mind that a .455 Webley is strictly regulated in Australia and is limited to collectors and others who can obtain a restricted hand gun license in Australia, an average sports shooter cannot. Thus values can fluctuate, average cost would be around 500 AUD.
Without more information, a broad range would be 10-500 USD
Most British officers carried the British Webley .38. -Some had a .455 version instead.
suggest you check with a gunsmith. I believe there is a slight difference between the 455 cal and 45 cal. however, I also believe the 455 cal can be changed (by gunsmith) to the 45 cal.
The standard issue weapons were... Webley revolver in .455 Webley Short Magazine Lee Enfield No. 1 Mk III in 7.7x56R (.303 British) Enfield P'14 in 7.7x56R (.303 British) Vickers machine gun in 7.7x56R (.303 British)
The value of a John Deere 455 lawn tractor depends on its condition. In used but excellent condition, such a tractor has a value of about 3,500 US dollars.
50-2500 usd