This is quite a rare combo. It appears in my WEM leaflet dated July 1978 so this combo must have been made around that time. There were also Bass and Reverb models of this combo produced. It’s an upgraded version of the AP25 and uses 4 x EL84 valves to produce its power. I suspect the “45” in the name is a little misleading as four EL84s would probably give you around 30 watts. It also has 3 pre-amp valves. One is definitely an ECC83 as can be seen in the pics and I suspect the other two are also ECC83s. I will take the valve covers off at some point to check this. I only acquired this combo in July 2016 and the pictures show it exactly as it came to me. It’s in good working condition but I’m advised by the seller that it loses power after about 30 minutes so I will get this checked and repaired. Based on other pics I’ve seen of AP45s, I believe the mains transformer is a replacement. Also, on other AP45s, the driver is a Celestion but I know that WEM tended to use whatever they had available at the time and so I think the Fane driver in this combo is probably original.