Thanks to all who replied and special thanks to the three wise men who identified this artifact correctly. Interesting how once someone presents a correct answer it turns out that it was obvious all the time 8*)
The bag is, in fact, a leaf bag from a Paramount leaf vacuum. Quite obvious once one realizes that the velcro cuff tightener shown on the left is designed to tighten the cuff around a pipe of some sort Hang that on your scrotum, Lou Deeter.
Martin Needleman
Annapolis, MD