# r2-edh-b1-11

**Claim (as registered):** At least one of two named upper-Danube/eastern-Alpine frontier provinces shows stamped portable objects (instrumentum domesticum -- pipes, bricks, tiles) at 10% or more of its monument-typed rows, matching a northwestern-limes military-frontier pattern.

**Proposed mechanism:** Legionary brick/pipe/tile production and stamping is proposed to concentrate this specific artefact type along militarized frontier zones, predicted to extend from the Rhine frontier eastward to the upper-Danube frontier.

**Scope:** Source: the Epigraphic Database Heidelberg (EDH), a catalogue of Roman-period inscriptions on stone/metal/etc. (physical objects, catalogued separately from a manuscript census). Training: the 33 provinces in the alphabetically first half of EDH's own province-code order (42,009 inscriptions). Holdout: the 33 provinces in the alphabetically second half, minus 'Provincia incerta' (EDH's own catch-all for uncertain findspots, not a real geographic unit, excluded from all arithmetic) -- 32 real provinces, 39,457 inscriptions -- landed in one complete fetch after the claim was fixed. EDH's own content has been fixed since 2021 (the cataloguing project's funding ended), so this holdout tests whether a pattern generalizes across an arbitrary alphabetical split of already-catalogued, unchanging material, not whether it predicts new discoveries. Named holdout targets: two specific upper-Danube/Alpine provinces. Minimum support: at least 100 monument-typed rows in a province.

**Training-side evidence:** Three Rhine-frontier training provinces show 17.6-20.5% (after correcting a denominator error in an earlier description). The same correction also found some non-frontier training provinces comparably high (around 19%), which weakens, without overturning, the clean frontier-vs-rest narrative originally described.

**Holdout test and outcome:** One of the two named provinces landed at 17.28% (the other landed lower, at 6.52%, but the claim only requires at least one of the two to clear the floor).

**Status:** Survived (at least one named target cleared 10%).
