Tropicals & Tender Perennials: Plant ID, Nana's Plant, 1 by tikipod

tikipod wrote:
I found a box with some photos and was absolutely surprised to see a picture of this beauty in with them. The picture was most likely taken by my Nana and was definitely my Nana's plant. The photo was likely taken in the 80's.

The funny thing is I remember this plant but for some odd reason I kept figuring it was a Christmas cactus and I was just exaggerating the size in my head.

Any idea what it is and where I can get one? The plant is no longer in my family but I would love to have one.