It's hard to know where to start with this one.  It's an Elpico AC85 PA system, the precursor to the more common AC88.  Sounds extremely good, pair of EL84s help give it that British sound that Marshall embodies in their very early days. These, the EZ81 rectifier and ECC83 pre-amp are all vintage Mullards and valuable in their own right.  But, of course, it's the pair of beautiful matched speaker cabinets with original Celestions which really make this amp stand out as something of extraordinary beautiful as well as historical significance.  I don't know if any other sets exist, maybe a handful.  If you Google for one you'll be taken to the Hofner site to see old photos of the same AC85 that we have here.   We replaced a couple of knackered Hunts caps, otherwise no changes needed.  Enough waffle from me, look at it, and come to the shop and play it, and then, maybe, buy it & own it.