Wow!  These look like relics from the 1980's, before Supra and Sentrilock had the electronic thing figured out!  These might be collectors' items.

How frustrating.  There are seemingly endless ways of separating money from real estate agents.   

I have no clue what this is. Seems like a nuisance to have to have yet another type of lockbox - good luck

Don't think they are usde in this area. Sounds like a needless pain,

I've never heard of that lockbox before reading this post.  What a pain.  I hope you find what you need. 

It's a key for commercial real estate lockbox...

I remember having one of those keys years ago. Our boxes are electronic and have been for 10 years.

Good luck

What the heck are those?

Is there suppose to be a photo here?

I use only supra lock boxes and supra key on my iphone. Most realtors in my area use supras since you have some control who and when see the property. 

We have Sentrilock, but never heard of JX206.  Good luck!

Heard of Sentrilock and Supra, and the combo lockboxes...  but not JX206.

  Is that something your Board uses?

I have no idea what this is. We have Supra and have had for a gazillion years.

Never heard of them.  Sorry.

Not sure if we have them in our area.

Good luck in your search.

I don't have one.