I’ve also got the same pump on an original K65 Stowaway. Seems to be the right pump for the period. Green ribbed connector, etc.
Picture of it here:
http://i1212.photobucket.com/albums/cc459/bicyclz/DSCN1968.jpg
If you click on it you get the proper, skinny version: )
My experience with Dover pumps is that the ‘handle section’ tends to distort over time, and cracks sometimes in use. Result is that if you want a good, complete, working one, they are few and far between.
But it you want one for completeness, etc. then the defects don’t matter much. A 10″ pump is hard work, even if it does work.
Tim Toman. I’ve got a 3 speed with an annoying rattle also, but I thought mine was caused by the mudguard…. ??
John.