engin numbers.

hi all i was just woundering my mate has a honda lady dax, and is currently stripping it to restore,
once we had removed the enging we found a number on like a little counter sunk plate near the footpeg rest.
is this the engin number?
and if so it dosent match the v5 log book he currently has, is there a way you can see if that engin is registered to another bike bfore informing the dvla to change the log book?

hope this makes sence thanks james.

I don't have much knowledge concerning the DVLA and all that UK stuff,
but originally the engine number matches the frame nuber.
Except for the prefix, which can differ.
(fe ST70-7325678 bike with engine ST50E-7325678)

What you could do, is change the prefix of your engine on the internet, and look if it is (was) a registered bike.

thanks waynus, but what site would i use to check the engin number and change the prefix what exacally do you mean by this, thanks alot mate,

Well, you can assume that the engine under your bike was originally fitted to a frame with the exact same digits, but a different prefix (letters).

So if you have an engine ST50E-12345678
I'd try to look for frame number
ST70-12345678
or
ST50-12345678
or
....