Like lighters from other years, there are significant variations in the manufacturing process that can help determine the exact year of production.Unfortunately I do not have the time or the money to build up a collection that will allow me to make the comparisons seen on the rest of the dating pages.Thirty-two units were delivered to the Bank of America in 1959 for full-time use as the bank's accounting computer and check handling system. Following World War II, Jimmy Stewart remained in the U. Air Corps as a Reserve Officer, and with the United States Air Force after it became a separate service in 1948.
While we make the product, we let the collecting community establish the worth of a knife after the retail sale.
ERMA was first demonstrated to the public in 1955 (September), and first tested on real banking accounts in the fall of 1956.
Production models (ERMA Mark II) of the ERMA computer were built by General Electric.
The appearance of the word "Zippo" in the bottom stamp provides another clue to dating.
There have been three major changes, as show below.
The value of a Case knife is usually determined by how much a collector is willing to pay to add to his or her collection.
We encourage collectors to reference the many books and pricing guides available about Case knives.
Many of our knives have increased in value over time.
However, the use of knives as an investment is a risk like any other investment.
As with most collectibles, the date of manufacture of a Zippo lighter often affects its value.
Valuable information on the bottom of every Zippo windproof lighter can help you determine its date of manufacture.