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Based on these findings that ranges of consecutive SNs were assigned to batches of the same model, we can extend our research: To reconstructing missing model production data – by using interpolation and extrapolation algorithms on our SN data.
Below a summary of my research findings regarding Epiphone's serial number (SN) systems and estimated production figures – based on the data analysis of approximately 3900 Epiphone instruments and amplifiers (SN/model pairs, documented in c. Reconstructing model production data – filling SN gaps through interpolation extrapolation 5. SNs of Epiphone amplifiers Notes Bibliography Epiphone's stringed instruments of the 1931–1956 period typically show a visible serial number – high-end models the same way as lower-priced instruments.
ranges of SNs exclusively assigned to one model (see example in Fig. Note that in many cases the very first and last SNs of a batch cannot be determined as long as there are SN gaps to the adjacent batch of a different model.
However all missing numbers between the lowest and highest documented SNs of an assumed model batch can be "interpolated" i.e.
6 are ballpark figures and do not claim to be exact. if total production of a model was likely in the dozens, in the hundreds, or in the thousands. Examples of model production estimates Below some examples of estimates for certain models/production periods. Based on our registry data, similar charts and conclusions can be made for any model or time period.
Although these estimates are still somewhat speculative and approximate at best, they are certainly based on a much larger data sample of higher quality than that on which previous research was based. We observe that in some periods certain SN ranges appear to have been reserved for certain models – with ascending numbers, however not always applied in strictly chronological order.
tentatively identified (with high probability) to also be examples of that same model.