Very nice! As people have noted, the keyboard is a Mac 128K/512K keyboard; the Mac Plus one had a numeric keypad. Having said that, I prefer the 65% type keyboard, I wish Apple had kept it as the standard format rather than going through the extended keyboard fetish in order to copy PCs. The reality is that they just take up more space and the extended keys don't get used much.
For example, look how aesthetic the smaller keyboard is alongside a compact Mac! The only changes for Apple's modern version is the cursor keys (I can live without function keys, don't use them much either).
PS: to preempt someone pointing me at a modern recreation of an ADB compact keyboard, I love it, except for the column of PgUp/PgDn type keys to the right of the <return> key! My touch-typing is inaccurate enough that I'm too frequently (i.e. about once per hour) hitting PgUp/PgDn and seeing the entire window or screen complete change. It's very disconcerting; it turns my ideal keyboard into the one I hate more than any other!