Door locks

I've got a 1986 90 but being such an early one, it seems to have a few features left over from a series 3...

I just tried to change the door locks, and found my defender barrels from paddocks don't fit.... So I either have series handles, or anti burst ones... any way to tell the difference?
Also,the drivers side one is playing silly buggers, so I intent to replace it. Has anyone managed to get a push button style to fit instead of the older style ones?
Thanks

Pop up a photo here and well know straight away. The series locks are pull up, but have an old house door inner mech. The later series and early 90/110s have an antiburst pull up lock. You need a good look at the parts book to get the right bits for these old locks.

To open them
Series 3 handle by the hip
90/110 handle by the knee.

Thought all the barrels were the same?
Post a photo of the lock/barrel

This is an 110- 85 wind up lift up handle door.

Thanks- will do tomorrow, when it is light... And here you go.
For the lock barrels, shiny one with key is new defender spec barrel from paddocks. Other is the one I just removed.
The rear door took a new defender barrel without a problem!