Click image for larger version. 

Name:	2016-04-14 09.11.39.jpg 
Views:	17 
Size:	743.5 KB 
ID:	15486
Just to show and tell!

Found on ebay....

The key (shown) works for the 4 on the left.
Working shackle combos for the 4 on the left.
Not sure how the one on the right got into this lot.
I did a search on this site and found that there were no posts for Multacc.
There is an excellent write up on them on the web somewhere. Maybe the moderator would post a link to the article.
Basicly the realtor would use this (unique to the agent) key to open box.
Inside the Multacc is a recorder which makes a binary imprint of the key # to a mylar ribbon for security.

These days they us electronics and cell phones and apps and stuff, not really sure which is more secure...

Semolian.