Our knowledgeable product specialists are always willing to help you verify product fitment. For example, if the first two digits of the engine code are '98,' your mower was manufactured in 1998, and '04' would indicate a 2004 Snapper mower.7 Digit Numbers - Correlation to Model Release and End DatesCode and/or Serial Number Year. The first two digits denote the year that your mower was manufactured. The engine code is a 12-digit number. &0183 &32 Find the engine code on the plate.The reason I say this is that in late 2017, I have become aware that an unknown Chinese person solved the puzzle, certainly for post 1960 non-SLRs, including TLRs, at least as long ago as August 2006. Together, we solved the YF and other SLR patterns until from late 1968, they again followed the TLR system (the cut-off for our investigations was the introduction of the Contax RTS and the Contax/Yashica mount). Contributor Chris Whelan worked out that the YE rangefinder and Pentamatic SLR also used date codes but the implementation was a little different to the other models.
The MolfoReflex has three unrelated serial number ranges. The Yashicaflex AS-II is another exception with a short series in the 30xxx range, then from 81xxx to 83xxx followed by a new series from 19xxx to 23xxx. The first exception is the first model, the Pigeonflex! Following the first few examples in my database, the body serial numbers dropped some 40,000. If the forum members had shown less negativity and more imagination and willingness to investigate, they would have got past the translation problems and saved me a ton of work! In 2006, I hadn't acquired my first Yashica yet so the unknown contributor to the Chinese website must get at least some recognition for working out the idea of a date code first.Originally, body serial numbers were generally consecutive within a model's production, although sometimes the numbers jumped, or increased digits, at some significant point. Similar patterns are found with the other models in this period and usually, the first few digits are the same across the models.The final block of Yashica A numbers have an “A” prefix. And then there is the 9 digit 116110451. These are followed by 6 digit numbers beginning with 61. Then there are 8 digit numbers beginning with 3810 followed by 7 digit numbers beginning with 391 and then 8 digit again with 3910. Early in the piece, the Yashica Flex B seems to have started with six digit numbers and then changed to a new series with 5 digits. When the numbers appeared to run out, the Yashica Mat-124G changed from a 7 digit series, with the “0” and “1” pattern noted above, to a new 6 digit series with no “0” and “1” pattern.Lens numbers began logically but there are some other oddities too. Finally, the solution has hit me in the face - see below:The Yashica 635 changed its alpha prefix from ST to SX. This happens with all the alpha prefixed numbers for all models and also occurs with the unprefixed 7 digit numbers of the Yashica Mat-124 and Yashica Mat-124G. Psp emulator mac youtubeOr, at least that is how it has seemed to me for a long time but with some models with really mixed up lens numbers, mainly in the mid-50's period, it now seems that there may have been up to three different number series being used at the same time. It's obvious how body numbers, taking lens and viewing lens numbers can easily get out of sequence with each other, if allowed to (not generally the case with bodies), which brings us to the third issue - I don't think keeping lens numbers in sequence was a high priority, certainly at certain times of production. The second problem is that serial numbers were pre-stamped on peripheral parts that were delivered separately to the production line and presumably there was more than one line. The most obvious problem is that for a time, Yashica used a system that made sense to it but until now, we didn't have the key to decipher - we could get a picture of the correct order from trim and detail changes but not understand the reasoning. Generally, the ranges for taking lenses and viewing lenses are the same and often, particularly with earlier cameras the numbers are in close proximity.To me, there are three issues which contribute to the difficulty with serial numbers. Even if there is consistency, it is not unusual for a later camera to have slightly earlier lens numbers than the cameras immediately before it. With the earlier numbers, the pattern is similar but mostly, the month numbers are “1” to “12” so that at “9”, numbers are 7 digit but at “10”, they become 8 digit. How simple is that? The step to seeing year and sequence numbers is not great, I have been numbering my digital files since 2005 with year, month and 4 digit sequence codes. However, even if I am 100% wrong, by strange coincidence or otherwise, my system will allow you to date a camera from that period to within 12 months of what my database, model release dates and across-the-board trim changes predict.The key is that with alpha prefixed and late 7 digit serial numbers, not only is the second digit from the left never higher than “1”, the second and third digit together are always in the range “01” to “12”. Snapper Year How To Apply ThatAt this stage, I think that I understand the patterns and month codes but for the year codes, I will need to make some educated guesses based on observation of a lot of serial numbers. Sometimes the combinations were slightly different. Model Identifier( Back to Contents) Serial Numbers from 1957 to 1960The September 1957 to December 1960 models used 6 digits, 8, 7, 8, 7, 8, 6 and some briefly (the Yashica 44LM not so briefly), 9 digits. “1265” represents the 1,265th camera made that month.This is how I believe the numbers from 1957 to 1980 operate but you will have to read the following sections to understand the logic and how to apply that knowledge. If there is a date code, the first digit could represent 1957 and the digit “9” could represent September.This applied to the Yashica A, C, LM, Yashica-Mat and Yashicaflex B. Then almost simultaneously, all models in production received a new 6 digit numbering system beginning with “79” (perhaps not the rare Japanese market Yashicaflex A which had just been released in August). September 1957 to December 1959Until September 1957, each model had a straightforward and mostly unique consecutive number series with the odd jump, up or down, here and there.
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