Can someone ID this... Again please

First, I'd like to apologize for disappearing. My computer crashed and the drive burnt out so I'm' told there's no way to recover the past 10 years of images from it
I then had set up a new home closer to work and didn't have internet for the first few months... When I finally did get it, I had very little free time and no cactus here with me. Well, I've made more free time and now have a few plants here with me... I also realized I had some plants posted on Photobucket.
Here's a few pics of one that I could swear I had identified by you guys last year, but can't find the post and seems the name has faded or gotten wiped off.
Any ideas?

TIA

i think this is not a mammillaria......
maybe a rebutia?

Hy!

Yeap is a Rebutia

Regards!

Ah Ha! That's why I couldn't find the ID on this forum
Must have been one of the others I visit
Thanks guys