Odd keys on F-XT?

[ander]

I was looking at this Model F-XT on eBay and noticed something odd about a couple of keys:





A closer shot (which I've enhanced somewhat) shows what look like extensions on Tab and Left Shift:





Was that a third-party thing you could get for these? (Whatever they're made of, they haven't fared as well as IBM's ABS.)

[mbardeen]

They look homemade...

...and IBM used PBT Keycaps on the Buckling Spring models.

[ander]

They look homemade...

Think so? That would've taken some skill.

...and IBM used PBT Keycaps on the Buckling Spring models.

Of course—the cases were ABS. 

[Sup]

Looks like he melted the topside of a key cap onto a buckelingspring compatible key cap and called it a day lol.

[ThoughtArtist]

That fancy drunken-delight solution still doesn't fix the horrid spacebar unfortunately