Vendo identification guide
Read the tag.
Date the machine.
Vendo used more than one serial-number system. Start with the model number, then use the matching date method.
Decode a Vendo serial
The short answer
Do not decode the serial until you know the model.
Look for a riveted metal tag on the cabinet, door liner, or refrigeration area.
Record the complete Model No. and Serial No. exactly as stamped.
Use a date-coded serial when it matches that format. Otherwise use the factory model range.
Serial 21014601
21014601
Manufactured
October 1952
14601 identifies the individual machine. It is not a day.
When the serial is only a sequence
Use the factory range
Example: a V-81 carrying serial 25000 falls within the factory’s 1957 range. These numbers cannot be applied to a V-39, V-23, V-144, or another model—the ranges are model-specific.

Primary reference
The chart behind the answer.
This surviving Vendo sheet lists annual serial ranges for several cooler models from 1946 through 1959. It is more reliable than applying one internet formula to every machine.
- Confirm the exact model first.
- Keep letters, prefixes, and leading zeroes.
- Use the range only for the matching model.
- Treat replacement or missing tags cautiously.
What the tag can tell you
Year and month—sometimes.
A correct plate can help establish the model, electrical specification, refrigeration-unit information, and an approximate production date.
It does not automatically prove the machine’s original paint, Coca-Cola configuration, exact day of manufacture, or whether major components were replaced later.