Evidence of flan preparation

Discussion in 'Ancient Coins' started by Roman Collector, Jun 6, 2017.

  1. Roman Collector

    Roman Collector Well-Known Member

    Post your coins that show evidence of pre-striking flan preparation!

    Jere M. Wickens, in his essay, "The Production of Ancient Coins," written for Bearers of Meaning: The Otillia Buerger Collection of Ancient and Byzantine Coins at Lawrence University, notes that flans "were cast en chapelet, that is, using open or closed moulds in which a number of mould hollows were connected by channels. Clear evidence for this method exists; the runners that connected the flans were not always completely removed."

    This denarius of Julia Domna shows evidence of such a runner at the edge of the flan at the 9:00 position of the obverse:

    Domna Four Seasons denarius.jpg
    Julia Domna, issued under Septimius Severus
    Roman AR denarius; 3.24 gm, 19.8 mm
    Rome mint, AD 207
    Obv: IVLIA AVGVSTA, bare-headed and draped bust, r.
    Rev: FECVNDITAS, Terra reclining l. under tree, left arm on basket of fruits, right hand set on globe, spangled with stars; in background, four children advancing r., representing the four seasons.
    Refs: RIC 549; BMCRE 21; Sear 6579

    In addition, flans were often prepared by lathe-turning, resulting in a "centration dimple," around which sometimes concentric circular scratches can still be seen. Examples of coins with such dimples abound, particularly in provincial issues from the Balkans and issues of Alexandria during the Ptolemaic period. Here's an example. Note the dimple between the two portraits on the obverse and on Asklepios' right thigh on the reverse:

    Gordian III and Tranquillina Anchialus Asklepios.jpg
    Gordian III (AD 238-244) and Tranquillina
    Roman provincial AE 26.4 mm, 12.98 g
    Thrace, Anchialus, AD 241
    Obv: Κ Μ ΑΝΤ ΓΟΡΔΙΑΝΟC ΑVΓ CΕΒ-[...], laureate, draped and cuirassed bust of Gordian and draped bust of Tranquillina, wearing stephane, confronted.
    Rev: ΟVΛΠΑΝW[ΑΝ]ΧΙΑΛΕWΝ, Asklepios standing facing, head left, with serpent climbing staff to left.
    Refs: Moushmov 2936; AMGN II 665; Varbanov 672; SNG Copenh --; BMC Thrace --
     
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  3. 4to2centBC

    4to2centBC Well-Known Member

    Dimpled

    [​IMG]

    PTOLEMAIC KINGS of EGYPT. Ptolemy III Euergetes. 246-222 BC.AE Drachm (41mm, 69.07 g, 11h). Alexandreia mint. Series 5. Struck 230-222 BC. Diademed head of Zeus-Ammon right / Eagle with closed wings standing left on thunderbolt; filleted cornucopia to left, XP monogram between legs. Svoronos 964; SNG Copenhagen 171-2. VF, attractive brown patina CNG 377 6/29/16

    Sprue-formerly owned

    [​IMG]

    Syracuse. Deinomenid Tyranny. 485 - 466 v.Chr.
    Tetradrachm, (17.16 g.), 485-466 BC. AR Tetradrachm Struck under Gelon, circa 485-480 BC. Charioteer driving quadriga right; above, Nike flying right, crowning horses SURAKOSION/ Diademed head of Arethusa right; four dolphins swimming around. Boehringer 120
    ex Gorny
     
    TheRed, GerardV, ancientone and 21 others like this.
  4. Roman Collector

    Roman Collector Well-Known Member

    Runner on Claudius Gothicus:

    Claudius II Providentia.jpg

    Runner broke off a denarius of Julia Aquileia Severa, taking a chunk of flan with it:

    Aquilia Severa denarius.jpg
     
  5. zumbly

    zumbly Ha'ina 'ia mai ana ka puana

    A very poorly-broken off runner.
    IMG_4473.PNG

    They didn't bother filing this sprue off.
    IMG_1371.JPG
     
  6. dougsmit

    dougsmit Member

    When it comes to slamming out thousands of poorly made coins in minimal time with the least attention to detail, it is hard to beat the Judaean Widow's Mites.

    First is an Alexander Jannaeus with exceptional sprues remaining.
    ju0110bb2546.jpg

    The Antigonus Matthias below shows that the flans were cast in a two sided mould but the halves were in this case poorly aligned so the flan has half thickness ledges on opposing edges. Both of these coins might have looked more normal were it not for the poor centering of the strike which left our evidence intact.
    ju0150bb2548.jpg

    The flan for the Castulo AE28 below was cast in a one sided cup mould with tapering sides to facilitate removing of the blank. Most of these were struck harder than this one so the flan was spread and flattened more than here where we can still see the tapered edges on the reverse. The obverse flat surface is considerably larger and completely flat. g00010bb0779.jpg

    The same open cups were used for flans for Alexandrian drachms but the sides were rounded rather than tapered in a straight line. Therefore the coin shows an obverse with rounded over edges and a reverse that is flat. Antoninus Pius here shows why it is hard to get full obverse legends on these.
    pa0250bb0458.jpg

    These variations of how coins were made is what we call 'fabric'. I consider the study of fabric an extremely important part of collecting. In addition to all the interesting details to learn, we need to know which issues ALWAYS have some particular fabric clue and which ones were pretty much random. If you find a coin always made on a certain type flan that is not as it should be, you must consider it fake until proven good.

    I love coins that show special fabric.
     
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  7. Roman Collector

    Roman Collector Well-Known Member

    Thank you so much for your ever-insightful commentary and examples!
     
    Severus Alexander likes this.
  8. Ancientnoob

    Ancientnoob Money Changer

    Tailored to size!
    India
    Kingdom of Magadha
    Bimbisara to Ajatasatru
    AR Karshapana (BC 550- 470)
    28 mm x 3.42 grams
    Obverse: 5 Large Punchmarks and one bankers mark(?), Archaic bent rayed sun, Bow with Arrow, 6 rayed design, Bull head circle Bull Head, Large Solar symbol, center Tree(?)
    Ref: G&H Series I (Variation)
    Note: Buddha Cash coin!
    Karsh3a.jpg
     
  9. Smojo

    Smojo dreamliner

    I was trying to figure out which coin to post.
    This Sept Sev is a treat and I happen to know Ajax likes it to. So here it is again
    20161216_115510.jpg
     
  10. dougsmit

    dougsmit Member

    That is a nice snake-knot.
     
  11. chrsmat71

    chrsmat71 I LIKE TURTLES!

    pontos file marks...

    100_5905.JPG


    does this show flan preparation? or lack of flan preparation?

    [​IMG]
     
  12. TypeCoin971793

    TypeCoin971793 Just a random guy on the internet

  13. Alegandron

    Alegandron "ΤΩΙ ΚΡΑΤΙΣΤΩΙ..." ΜΕΓΑΣ ΑΛΕΞΑΝΔΡΟΣ, June 323 BCE

    Sicily Syracuse Timoleon Third Deocracy 344-317 BCE AE Hemidrachm Zeus Thundrbolt.JPG
    Sicily Syracuse Timoleon Third Deocracy 344-317 BCE AE Hemidrachm Zeus Thundrbolt

    RR Anon AE Double-Litra 275-270 BC Apollo Lion S 590 Cr 16-1a.jpg
    RR Anon AE Double-Litra 275-270 BC Apollo Lion S 590 Cr 16-1a

    Egypt Ptolemy IV 221-205 BC AE 37mm 42g Drachm Zeus-Ammon Eagle Tbolt SV 974.jpg
    Egypt Ptolemy IV 221-205 BC AE 37mm 42g Drachm Zeus-Ammon Eagle Tbolt SV 974
     
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  14. gregarious

    gregarious E Pluribus Unum

    Roman Collector likes this.
  15. randygeki

    randygeki Coin Collector

  16. Roman Collector

    Roman Collector Well-Known Member

    A couple of new ones I bought from Warren Esty.

    The first has a huge chunk of flan missing where the sprue broke off:

    Gallienus PAX flan chip.jpg

    The second is so off center that one can see where the edge of the reverse die was:

    Gallienus PAX off center.jpg
     
  17. ancientone

    ancientone Well-Known Member

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