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<p>[QUOTE=&quot;Jochen1, post: 8051945, member: 103829&quot;][USER=74712]@FitzNigel[/USER] is right, it&#039;s the indiction number!</p><p><br /></p><p>Resolution:</p><p>The inscription is for the year 1450, and XIII = 13 is the so-called year of indiction. 1450 is the 13th year in the 97th indiction cycle.</p><p><br /></p><p>Explanation:</p><p>The indiction is a 15-year cycle that was finally established in 537 AD by Emperor Justinian I, presumably for reasons of fiscal and financial accounting. Originally, Diocletian had established a five-year cycle, but by 312, under Constantine I, the 15-year rhythm had been adopted. The years are numbered as the 1st indiction, 2nd indiction, 3rd indiction and so on until the 15th indiction, whereupon it starts all over again in the next cycle. So the fifteenth indication is followed by the first again. For each year of indication, the Roman number was determined.</p><p>There are different types of indictions, which differ in the beginning of the 1st year:</p><p><br /></p><p>(1) The indictio Graeca (or constantinopolitana) begins on 1 September and was common above all in the Byzantine Empire (hence the Orthodox church year also begins on 1 September to this day), Sicily and the papal chancery, as well as under Frederick II and Henry VII.</p><p><br /></p><p>(2) The indictio Bedana (caesarea, constantina) begins on 24 September and was exclusively common in England and in France as well as Italy.</p><p><br /></p><p>(3) The indictio Romana (pontificia) begins its year on 25 December or 1 January (New Year&#039;s indiction) and was most common in the late Middle Ages; in Germany it was predominant from the 13th century onwards.</p><p><br /></p><p>The indiction was common throughout the Occident, except in Spain, for calendar calculations to determine the Julian date; for a long time it served as a substitute for a fixed year count; the German Imperial Chamber Court used the indiction until its dissolution in 1806.</p><p><br /></p><p>Closely related to the term indiction is the indiction year. It is one of the most common year designations of the Middle Ages. It is based on a 15-year cycle beginning in 3 BC. Thus, according to our calendar today, a year is an indiction year by adding 3 to the year and then dividing by 15.</p><p><br /></p><p>Back to our example: We obviously have here the year MCCCCL = 1450. Adding 3 gives us 1453. Dividing by the cycle length of 15 gives 96 remainder 13. The year 1450 is therefore the 13th year in the 97th induction cycle. This 13 was added to the year with a vertical line (or an I?). The index number belonged to the so-called eschatokoll (from Greek eschaton &#039;the utmost&#039; last&#039;), the final record of a classical medieval deed. It is therefore a kind of control number, as we find today on credit cards, for example, where a digit is added to the card number to make the number even. So a reading error or fraud can be detected automatically.</p><p><br /></p><p>I think that this was an interesting discovery after all, which I made in the small village church of Unterbrändi near Freudenstadt in the Black Forest.</p><p><br /></p><p>Best regards</p><p>Jochen[/QUOTE]</p><p><br /></p>

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