Mmmm. This looks to be a Henry Hugh Hussey (son of HJ) gun. I have a photo of gun no 100 and gun no 103; this one came between the two, clearly. But thereafter no three digit gun numbers recorded for either HJ or HH.
I suspect this was a gun sold by HH under his own name, hence the 'H Hussey' and HHH on the barrels, made during the period his father was only allowed to work away from the London trade - he had been 'sent to Coventry' in effect, by his investors. I have long held a suspicion that HH continued making guns on behalf of his father, which lead to the use of the "Hussey", "Hussey & Hussey" names on guns at the time.
Gun no 100 was sold at Holts in Sep 2009: 'H. HUSSEY A 12-BORE SIDELOCK EJECTOR, serial no. 100, 28in. nitro reproved barrels (possibly shortened) rib engraved `H. HUSSEY, LONDON.`, 2 1/2in. chambers, bored approx. true cyl. both, automatic safety with gold-inlaid `SAFE` detail, cocking-indicators, beaded border engraving, retaining very slight traces of original colour-hardening, 14 1/2in. figured stock, replacement fore-end wood, weight 6lb. 10oz.'
![[Linked Image from jpgbox.com]](https://www.jpgbox.com/jpg/73602_600x400.jpg)
Gun no 103 was a .300 hammer rook rifle bought in from Birmingham, like so many of the type.
Therefore on balance I am inclined to think that the gun we are discussing here is a genuine Harry Hussey. However, as to its current condition, I make no comment, other than to say it looks to have been 'tarted up' somewhat.
Tim