With no battens in the jib it will probably flutter unless there is hollow cut into the leech. Most sail makers would have batten material, if not they can certainly get it.

Forgot to mention. He is selling tapered battens.
Do I need tapered battens?
Boat is an Endeavour 26.

put a bit of sheet flooring plastic strip in and see how it goes

If it's a 1.4m batten on a jib then it absolutely needs to be tapered. My question is why an Endeavour 26 would have a batten that long in the jib, must be full length for some reason. You could easily get the pocket changed to a short batten and it would make sail handling easier.

The only reason an Endeavour 26 would be fully battened is if the cloth has crapped out and someone previously was trying to hide the hideous shape by smoothing it with battens.

I should also add that your supplier choices are RBS epoxy battens from Bainbridge Aquabatten or slightly cheaper Permex vinylester battens from Contender sailcloth. Both do battens meeting your specs but getting them to wherever you are can be expensive.

Thanks for all the above info.
The sail is quite old.
The sleeves for the battens seem to be original.
The battens are made up of 2 very thin battens taped together. I originally thought that the one that snapped was a dodgy repair. However the other 2 are the same. Yes, 3 battens not 2. My bad. So effecticely making a tapered batten out of 2 thin ones. You can see in the pics below that the batten is about 2/3 of 2 taped together and the last 1/3 single. VERY flexible.
No makers marks on the sail.
I know very little about sails. So why it is so, I have no idea.
The tapered batten i purchased is too stiff. I might either sand it down, or sell it.
The yellow tongue suggested by SandS is looking good. About the same flexibility. Just a little narrow.

lydia said..
Just to explain, if a full length top batten the better view it should have no taper as it is compression and the seam shape should do the rest.
In other words why put in seam shape then try to work against it with a tapered batten.
Very different for other battens which will need to be tapered.

I've got heaps of sails with seam shape AND tapered full battens. By the way, Jethrow was a sailmaker for years.