We have an old 30-40 some odd year old tree. Unknown variety.

Looking at it a couple days ago there is one branch that has entirely different Apple than the rest of the tree. It has not been grafted.

It's a different shape and size, a different color (more yellow green than blue green) and it's shiny like a polished Macintosh where the other limbs have a waxy bloom.

There's only one Apple like it because I cut the tree way back this year.

So if it is a mutation and if I like this Apple, will the mutation be on the whole branch or just that spur? I've basically cut most of the main limb off to graft to this year via bark/rhind graft) and left a couple nurse branches and this mystery apple is on one of those branches. Branch is about 2-3" thick. Main limb is about 6-8" thick.

I'll document size and shape with photos and dates and watch to see if it changes color. I'll have to taste it at some point too but will take photos of top bottom insides and seeds.

Any input would be greatly appreciated!