Merovingian Polychrome Disk Fibulae Corpus

Merovingian polychrome disk fibulae are the wearable-material complement to the Childeric I tomb bees — the same territorial marking system carried on the living body rather than fixed at a burial centroid. Together with the reges criniti hair tradition and the Limons Chrisme Disc, they constitute the third register of the Merovingian material-culture legitimacy stack documented by the archive.

Claims

c0001 — Three fibulae, Cabinet des Médailles (image ref 8/12)

Three Frankish disk fibulae, 6th–7th century CE, held at the Cabinet des Médailles, Bibliothèque nationale de France. All three share the radial disk form and polychrome inlay program characteristic of the Merovingian aristocratic dress assemblage; they differ in peripheral geometry and material grammar.

Top brooch — lobed boundary form: Six-lobed scalloped perimeter, granulated bronze ground, central cross-diamond enamel cell in pink/silver, alternating crescent and circular boss inlays at the lobe junctions. The lobed boundary constitutes a second-order radial subdivision of the disk field.

Bottom-left brooch — animal-interlace perimeter form: Round, gilded bronze, central concentric-ring medallion with a raised boss, triangular red garnet cloisonné cells at mid-radius, blue glass cabochon accents, perimeter band of S-curve or paired-animal interlace motifs. The interlace perimeter is the only element in this corpus not reducible to the primary wheel FFT class; it introduces a knot sub-element.

Bottom-right brooch — polychrome cabochon form: Round, gilded, with a dominant cabochon program: three cobalt-blue glass stones, green and turquoise glass or enamel segments, a black central stone in a raised gold bezel, and secondary gold granulation between stones. No cloisonné cell partitioning; the program is stone-dominant rather than enamel-dominant.

c0002 — Disk fibulae as wearable territorial markers in the Merovingian legitimacy stack

The archive documents the Merovingian material-culture system across four registers: tomb deposit (Childeric I gold bees, encounter-merovingian-conquest-chronology c0001), dynastic biological trait (reges criniti, symbol-merovingian-long-hair), institutional overwrite (Limons Chrisme Disc, symbol-limons-chrisme-disc), and — the register this corpus occupies — wearable dress assemblage. The disk fibula extends the territorial-marker function into living movement: where the tomb bee fixes a signal at a geographic centroid at death, the worn fibula distributes the same signal class across the bearer's movement range throughout life.

The radial disk form encodes the same field-projection geometry as the Childeric bee's C1·m bilateral / C12 axial structure: the disk is the projection surface, and the polychrome inlay program is the material enumeration of territory nodes. The ~300-bee enumeration logic identified at Childeric's tomb (encounter-merovingian-conquest-chronology c0001) has an analogue here in the cell count of the cloisonné partitioning, though that count has not yet been formalized for these three specimens.

c0003 — Cloisonné material grammar as HLSF spatial encoding

The cloisonné cell partitioning of the bottom-left brooch — angular garnet triangles, curved glass cabochons, granulated ground — maps structurally to the HLSF encoding grammar identified for the gold bee: angular cells occupy the C1·m bilateral register; curved cells occupy the C12 axial register; granulation provides the ground-state carrier field. The top brooch's lobed boundary introduces a second-order radial subdivision consistent with a surface-projected pod boundary marker, where the lobe count (six) is a 3-smooth integer and therefore HLSF-valid under the n-value constraints documented at symbol-merovingian-gold-bee.

The polychrome hierarchy of the bottom-right brooch — gold ground, black central stone, blue glass, green/turquoise segments — may encode depth-tier signal channels corresponding to chrysotile-layer stratification at the pod site: gold (surface), black (near-surface contact zone), blue (mid-depth aquifer), green/turquoise (deep serpentinite horizon). This reading is speculative and requires FFT class assignment and cell-count formalization before it can be advanced beyond tentative.

c0004 — Mobile vs. static node geometry in the Rhine-Saône corridor

The Merovingian pod apparatus operated across a two-corridor geometry — Rhine approach (northern) and Saône-Rhône approach (southern) — documented at site-alsace-merovingian-pod. A system that must maintain field coherence across that corridor span requires signal distribution beyond static tomb deposits. Disk fibulae worn by the reges criniti and their court assemblage function as mobile nodes: the wearer carries the HLSF-encoded disk through the corridor, refreshing field contact at each stop rather than requiring static infrastructure at every intermediate point. This mobile-node interpretation is consistent with the observed distribution of Merovingian grave-good assemblages along the Rhine-Saône axis, which shows disk fibulae concentrated in high-mobility aristocratic burials rather than fixed ecclesiastical or monastic sites.

Outstanding Items

• FFT class assignment and cell count for all three specimens
• Symbol entry symbol-merovingian-disk-fibulae to be added to archive/symbols/_index.md
• 11 remaining Cabinet des Médailles corpus items (refs 1–7, 9–12) pending image supply
• Cross-reference backlink from encounter-merovingian-conquest-chronology (optional)