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275330

A CASE STUDY OF A SET OF COIN SILVER SPOONS FROM MOHAMED ALI MUSEUM, CAIRO, EGYPT

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Last updated: 01 Jan 2025

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Abstract

In this research, a set of four coin silver spoons that belong to prince Mohamed Ali and were struck in Egypt in the name of Sultan Abdul Hamid II (1293-1327 AH / 1876-1909 AD) is investigated. The set was exhibited at Prince Mohamed Ali Museum, in Cairo, Egypt. As it has never been studied before, the study aims to identify the manufacturing technique and the deterioration aspects. Visible imaging and geometrical documentation were undertaken to reveal the preservation condition of the objects. A USB Digital microscope was used to examine the coin spoons. Portable x-ray fluorescence (XRF) was used for the elemental analysis of the alloy, while Scanning Electron Microscopy coupled with energy dispersive X-ray (SEM-EDX) was used in order to identify the corrosion products. Metallographic Microscope was used to identify the alloy microstructure to explore the manufacturing technology. Portable x-ray fluorescence (XRF) showed that the coin spoons are made of coin silver, which is an alloy of silver and copper. While the results of scanning electron microscopy coupled with energy dispersive X-ray (SEM-EDX) confirmed the portable x-ray fluorescence analysis that the coin spoons were made of a silver-copper alloy, SEM-EDX analysis also showed the presence of elemental corrosion layers like C, S, and Cl. An investigation with metallography of the crescent-like shape at the end of the hand part of the coin spoon found that the hand area was cast then twisted, It was also revealed that the coin part had been cast first, and then struck afterward, as seen by the cold-worked dendrites that were deformed.

DOI

10.21608/ejchem.2022.178644.7266

Keywords

Coin spoon, Tughra, Silver- copper alloys, tarnishing, Microstructure, XRF, SEM-EDX

Authors

First Name

Yasmin A.

Last Name

EL- Moaz

MiddleName

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Affiliation

Conservation Department, Faculty of Archaeology, Cairo University, 12613 Giza, Egypt

Email

yasmin97@cu.edu.eg

City

giza

Orcid

-

First Name

Wafaa A.

Last Name

Mohamed

MiddleName

-

Affiliation

Conservation Department, Faculty of Archaeology, Cairo University, 12613 Giza, Egypt

Email

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City

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Orcid

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First Name

Mai M.

Last Name

Rifai

MiddleName

-

Affiliation

Conservation Department, Faculty of Archaeology, Cairo University, 12613 Giza, Egypt

Email

-

City

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Orcid

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First Name

Nasser N.

Last Name

Morgan

MiddleName

-

Affiliation

Plasma Center, Al-Azhar University, 11884 Cairo, Egypt., Physics Department, Faculty of Science, Al-Azhar University, 11884 Cairo, Egypt

Email

-

City

-

Orcid

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Volume

66

Article Issue

9

Related Issue

43167

Issue Date

2023-09-01

Receive Date

2022-12-04

Publish Date

2023-09-01

Page Start

385

Page End

394

Print ISSN

0449-2285

Online ISSN

2357-0245

Link

https://ejchem.journals.ekb.eg/article_275330.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=275330

Order

275,330

Type

Original Article

Type Code

297

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle

A CASE STUDY OF A SET OF COIN SILVER SPOONS FROM MOHAMED ALI MUSEUM, CAIRO, EGYPT

Details

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Article

Created At

30 Dec 2024