The Scott Specialized Catalogue of United Stamps and Covers has a thorough section of CVP labels, which shows their development and the different types produced.
Large Lot of Machine Set Up and Test Label Computer Vended Postage Stamps
Postmark - Wikipedia
VATOS Interactive Vending Machine Toy - Pretend Play for Toddlers Age 3 4 5 Years Old Kids Drink Machine Games Light & Sound Educational Toys Early Development Toy,Fun Gift for Boys
Computer Stamp
ATM & Computer-Vended Postage Labels
Philatelic & Stamp-Collecting Hobby News Articles
Vatos Interactive Vending Machine Toy - Pretend Play for Toddlers Age 3 4 5 Years Old Kids Drink Machine Games Light & Sound Educational Toys Early
Postage stamp - Wikipedia
U.S. STAMPS & POSTAL HISTORY
COMPUTER VENDED stamp collection, 110 strip 5 and singles, MNH, buy less is ok
U.S. STAMPS & POSTAL HISTORY
The Meter Stamp Society - Computer Vended Postage (CVP)