I'm really just guessing on the value of this HH Solid State Bass Combo.  The heads seem to go for £275ish, very , very difficult to find any 1x15 combos.  I'm going to put this one up for £300 and hope that's near the mark.  Cosmetically the head part is not great, plenty of knob damage and so on.  Electronically it seems to work just fine, bassy & loud.  Be warned though, it's incredibly heavy.  If you like gloriously over-the-top seventies tech then this might be your thing.  Can't tell what the speaker is, possibly Fane as these were favoured by HH, I believe.