Vintage dating com

Backstamps On the bottom of most every genuine Pyrex opalware article is an embossed set of markings which contains a variety of information. The backstamp seen on various items prior to that echoes a Mac Beth-Evans trademark, but one not previously used on their glassware: that of a glassblower, or "gaffer", nicknamed "Little Joe". Since pattern collections and promotional pieces were available for relatively finite periods, knowing their years of introduction and discontinuance can also help narrow down dating somewhat.

While technically a trademark, it is most often seen referred to as a backstamp. The configuration of the backstamp would undergo a few revisions after the introduction of opal glass kitchenware in 1945. A listing of patterns by year of introduction can be found .

D151898 D151898 D16 AH100924 AH101371 AH101815 N/A N/A N/A D15/12 EL100144 EL100211 N/A N/A N/A N/A D17 AL100092 AL100402 AL100575 AL100886 AL100888 N/A D17/12 GC100026 N/A N/A N/A N/A N/A D25 DA113675 DA114523 DA115528 DA001232 ?

DA252265 D252986 D25/12 N/A N/A N/A D2512467 N/A D251005 D25C EH100101 N/A N/A N/A N/A N/A D30 N/A N/A N/A D3000367 ?

Each are numbered on the back of the headstock with the number in the given series, i.e. Each also has a seven digit serial number inside the guitar. The last four digits refer to the date of production.

The first three numbers (beginning with 500), refer to the sequence of units made, i.e. The first and fourth of these numbers in reverse refer to the year of production. For example: #5077019 would mean the seventh guitar made that year, and would date to January 1997.

├ A Glossary of Terms ├ Dating Pyrex Kitchenware ├ Pyrex Ware Patterns │├ Pyrex Pattern List │├ Pyrex Pattern Browser │└ Pyrex Pattern Timeline │ ├ Standard Patterns │ └ Non-Standard Patterns ├ Pyrex Opal Ware Shapes ├ Pyrex Model Numbers ├ About Pyrex Item Numbers ├ About Pyrex Colors ├ Pyrex Solid Colors ID Chart ├ Pyrex Promo Accessory ID ├ Vintage Pyrex Advertising ├ Pyrex Catalogs & Brochures ├ Patent Database ├ Videos & Links └ Accessories/Books/Apparel Estimating the age of Pyrex opal glass kitchenware can most often be done by observing a few basic characteristics. Production of opal ware commenced in 1936 after the merger with Mac Beth-Evans Glass Co. The plant there would be used to produce a more durable messware for the military. in a downward curve below forming a broken circle of sorts around the name. No model number or other information was included on the earliest pieces. 1950 or shortly thereafter, the registered trademark symbol "®" was added below the name, the encircling wording became TRADE MARK above the name, with MADE IN U. These appear to be related to either molds or production runs. Patterns The first pieces to have a decorative graphical pattern applied appear to have debuted in 1956.

While colors and styles of decoration reflected consumer tastes at the time of production, the first thing to look at is the backstamp. But the product would not be branded Pyrex until the debut of kitchenware made from it nearly a decade later. New patterns were introduced in keeping with changing tastes, so they can also give clues as to time period.

While there are some holes in the historical record, as well as a few anomalies, inconsistencies, and obvious errors in the dating charts, the information complied and presented here is the most comprehensive data we have available for dating Guild guitars.I do get dozens of Emails a week thanking me for keeping this information on the web (and you are welcome) and asking questions about older Guild Guitars. If you are thinking of selling, check adds in Vintage Guitar Magazine, or on Guitar classified web pages and see what similar Guitars are selling for.Unfortunately I am too busy trying to earn a living, doing what I love to do (selling and occasionally playing the guitar) to answer these emails. YEAR FIRST NUMBER PRODUCED LAST NUMBER PRODUCED 1960 12036 14713 1961 14714 18419 1962 18420 22722 1963 22723 28943 1964 28944 38636 1965 ** 46606** (See Next Chart) 1966 ** 46608** (See Next Chart) 1967 ** 46637** (See Next Chart) 1968 ** 46656** (See Next Chart) 1969 ** 46695** (See Next Chart) **Between the years 19, Guild used a separate serial numbering system for each guitar model The following chart details the year, the guitar model, and the beginning and ending serial number for each model in each given year.Please refer to the guides before each chart for information on how to interpret the data.There are other resources for dating Guild guitars which you may also want to consult, such as: "The Guild Guitar Book" by Hans Moust, and "Gruhn's Guide To Vintage Guitars" by George Gruhn.

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