dangermouse,
looking good! very close to fruition...maybe you'll get some this spring...looks like a plant from Pine Island. It's older than it looks...probably close to 8yrs now...mine fruited at that same size last year.
it's hard to tell if those are flowers...but mine is making small flower buds now, so the timing is right for blooming...but the trouble is, they leaf out at the same time too! the new leaves have buds that are like a spear, the flower buds are more ball like, and clustered.