Ah, the memories!  Sounds like you've found it. There are thick metal tabs bent over the ends that latch onto these: http://www.ebay.com/itm/like/292063314002?lpid=82&chn=ps&ul_noapp=true You can get the canvas now too: http://www.evwparts.com/vwparts/WestfaliaBusCots/AW102.html  Send me a picture if you want verification.

I see these every once in a while on The Samba, and complete OEM sets are usually listed for around $200. 

I used the cot in my '68 until my son outgrew it, but a friend who had a '71 and three kids had his same age son use it longer with his feet out the window. It was a different era . . .

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of David Bjorkman
Sent: Sunday, March 26, 2017 2:38 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Front cot

Hi all;
I was just rummaging thru the basement and may have found the long lost front childs cot from my ol' 68 campmobile.  I'm just not sure.  It's appox. 56" long (black steel rod supports).  Can anybody give me correct dimensions and maybe a pic of the ends that connect to the pillars.  Any identifying marks would be helpful.
It's in surprisingly good shape.  Samba search has yielded no real results.

Thanks
Dave B.