ib kofod larsen, info wanted  

I have some pictures of this...
I have some pictures of this sofa in my archive, they can be seem be using the links below:
http://i143.photobucket.com/albums/r148/m_andersen/IbKofodLarsenSofa01.jpghttp://i143.photobucket.com/albums/r148/m_andersen/IbKofodLarsenSofa03.jpghttp://i143.photobucket.com/albums/r148/m_andersen/IbKofodLarsenSofa04.jp g" target="_blank">http://i143.photobucket.com/albums/r148/m_andersen/IbKofodLarsenSofa01.jpghttp://i143.photobucket.com/albums/r148/m_andersen/IbKofodLarsenSofa03.jpghttp://i143.photobucket.com/albums/r148/m_andersen/IbKofodLarsenSofa04.jp g"/>
Reg. the drawer I'm not sure which model you mean. Have you tried seaching Ib's name in this online library?:
https://ext.kb.dk/F/-?func=option-update-lng&file_name=find-a&local_base...

hard to find
I searched for a year to find info on one chair, that I actually ended up purchasing. It's his Plywood back, upholdered seat low lounge chair with wrought iron base. It was extremely hard to find info on him.
His design's are not especially popular. he has a few that I think are outstanding and many very basic danish designs that look pretty generic. I haven't found info on this site but once came up on something (although not extremely informative) on architonic.com.
Good luck with this. Seems no one knows the value of his pieces. I have seen my chair for 200-900 USD which is pretty broad.

He was also active in the UK
in the mid to late 1960s..
see 'G Plan Danish' here:
http://www.retrowow.co.uk/retro_style/homes/retro_furniture.html