Is this a Mac Plus accelerator card?

[6809]

I was going through some old boxes that I had sitting in storage for ages when I found this.  I've never been able to find any info on it.  

The board is marked MODAM MAC PLUS I/F REV A  PN X18-S02 on the top side and © 1990 MEMORY PLUS on the bottom.  The markings have been scrubbed from the PLCC chip.  There's 512KB? (4 x m5m4c256l) of RAM, an empty socket for a crystal oscillator, a clip lead on a single wire and a connector with 9 pins.  On the bottom of the board is a socket that appears to clip over an existing DIP 68000.

I'd have thought an accelerator would need more than 512KB of on board ram for it to be worthwhile, but what else could it be?

 

[360alaska]

No, that's not an accelerator, that's a FPD (Full page display).

 

[Trash80toHP_Mini]

I must have missed this one, nice card. That Clip looks like a much easier 3D repro candidate than the KillyKlip. The metalwork seems to be more simple to implement than what I recall. Looks like a novel way to have have gotten around the patent problem.

What's the spacing between the header rows? I'm guessing it's wider than a 68000 CPU socket's and intended for PCB mounting only whereas the KillyKlip is a generic interface to a CPU socket on the underside of an expansion card, making the combo much higher in profile.