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Abstract

This article deals with the issue of King John Casimir’s copper shillings struck in 1659–1666, emerging from the analysis of the structure of large shilling hoards in relation to the contents of mint reports. It was conducted on the basis of representative, newly-described finds from Idźki-Wykno and Rokitno, as well as previously published deposits, encompassing more than 59,000 coins. On this basis, the global production volume of shillings was estimated along with the share of individual mints. These values prompt a response to the accusations of mintage abuse levelled against Tytus Livius Boratini. However, another premise emerged from the initial analysis of false shillings that helps to date hoards of copper shillings.
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Authors and Affiliations

Tomasz Markiewicz
1
ORCID: ORCID

  1. National Museum in Lublin, Zamkowa 9, PL 20–117 Lublin, Poland
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Abstract

The text is an analysis of two hoards of copper shillings (szeląg) of John Casimir Vasa (1648–1668) dating from the years 1659–1666, found in one of the arable fields at Rokitno (Lubartów County) in 1981 and 2011. The first one is made up entirely of 3,530 copper shillings (so called boratynka in singular), while in the other one, with 10,218 pieces, the same coin type accounts for 99.9%. The structures of these two hoards from Rokitno correspond with some other representative deposits of the same coin type from the localities such as Idźki-Wykno, Przasnysz, Terespol. This particular structure refers, among other things, to percentage shares of the Polish Crown and Lithuanian shillings as well as to how the individual mints and years of issue are represented in these types. The hoard unearthed in 1981 was deposited most probably in the early fourth quarter of the 17th century, whereas the one found in 2011 – shortly after 1695.
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Authors and Affiliations

Tomasz Markiewicz
1
ORCID: ORCID

  1. Muzeum Narodowe w Lublinie, ul. Zamkowa 9, 20–117 Lublin
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Abstract

The subject of the article is a new classification of 15th-century, anonymous Polish denars of type II, according to Stanisława Kubiak’s classification, attributed to Vladislaus III of Varna (1434–1444). The research is based on the Lublin hoard, concealed after 1455 and consisting of 1654 coins, mainly denars of the Polish king. The analysis of the images on the obverses and reverses led to establishing groups and variants of dies with common stylistic features, resulting in the proposal of a new chronological order for the coins.
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Authors and Affiliations

Tomasz Markiewicz
ORCID: ORCID
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Abstract

Recently, the analysis of medical imaging is gaining substantial research interest, due to advancements in the computer vision field. Automation of medical image analysis can significantly improve the diagnosis process and lead to better prioritization of patients waiting for medical consultation. This research is dedicated to building a multi-feature ensemble model which associates two independent methods of image description: textural features and deep learning. Different algorithms of classification were applied to single-phase computed tomography images containing 8 subtypes of renal neoplastic lesions. The final ensemble includes a textural description combined with a support vector machine and various configurations of Convolutional Neural Networks. Results of experimental tests have proved that such a model can achieve 93.6% of weighted F1-score (tested in 10-fold cross validation mode). Improvement of performance of the best individual predictor totalled 3.5 percentage points.
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Authors and Affiliations

Aleksandra Maria Osowska-Kurczab
1
ORCID: ORCID
Tomasz Markiewicz
1 2
ORCID: ORCID
Miroslaw Dziekiewicz
2
Malgorzata Lorent
2

  1. Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw, Poland
  2. Military Institute of Medicine, ul. Szaserów 128, 04-141 Warsaw, Poland
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Abstract

The assemblage of coins found in the Old Town district of Lublin (6a, Wincentego Pola St., presently known as Archidiakońska St.) on 1 July 1981 consists of 21 false groschen of Sigismund III Vasa (1587–1632) and 2 fragments of unspecified coins. As a result of the research analysis, it has been found that the coins were minted in tin-coated copper. Despite the fact that the dates are decipherable only on 10 groschen coins, it may be inferred from the identity of the coin dies that 15 of them (71.4%) bear the year 1608, while 5 (23.8%) – 1607. No date has been determined for only one coin. The groschen of 1607, struck with the use of one pair of coin dies, imitate the bust / eagle type. This particular variation tends to prevail also among the pieces with the date 1608 (13 out of a total number of 15 pieces), which had been coined with the use of two pairs of dies. 1 groschen with a bust and 2 groschen with a crown image had been struck by means of some other coin dies. The fact that the forged coins were found at the site of the former townhouse owned by the mayor Jan Szembek (since 1608) allows us to presume that they may have been deposited there as a result of some administrative action taken against the illegal practice. Beginning from the early decades of the 17th century, conditions for the growth of such practices had been created and fuelled by the atmosphere of the increasing economic crisis and the resulting perturbations spreading across the monetary markets of the Polish-Lithuanian Commonwealth.
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Authors and Affiliations

Miłosz Huber
1
ORCID: ORCID
Tomasz Markiewicz
2
ORCID: ORCID

  1. Katedra Geologii, Gleboznawstwa i Geoinformacji UMCS, Al. Kraśnickie 2cd 20-718 Lublin
  2. Muzeum Narodowe w Lublinie, ul. Zamkowa 9, 20–117 Lublin
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Abstract

Archaeological excavations conducted recently in Kalisz brought about two groups of Jagiellonian pennies. One is a small hoard of less than twenty coins of Vladislaus Jagiełło, found near the St. Joseph Sanctuary. The other comprises 37 coins found separately in archaeological excavations at early mediaeval settlement known as Stare Miasto (Old Town), adjacent to the hillfort at Zawodzie.

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Authors and Affiliations

Adam Kędzierski
Tomasz Markiewicz
ORCID: ORCID
Tomasz Zawadzki

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