# r3-b1-06

**Claim (as registered):** A large Iranian union catalogue has a materially lower institutional-attribution completeness rate (share of records with a resolved holding institution) than every other checked large source, and this gap is stable as the catalogue grows.

**Proposed mechanism:** A catalogue-construction/harvest-completeness fact about this one union catalogue specifically (which aggregates contributions from many institutions with uneven metadata practice), not a claim about Iranian manuscript production or survival.

**Scope:** This conjecture concerns the manuscript-catalogue source(s) named below only -- it does not involve NAMAMI or India data at all, and is not decided by NAMAMI's India-state holdout in any way (no India state's landing can confirm or refute it). It is decided only by future growth of, or new landings to, the specific source(s) named below; no such test has run yet. Specifically: one large Iranian union catalogue (323,111 rows), compared against seven other already-landed large sources.

**Training-side evidence:** The union catalogue's institution-attribution completeness is 69.86% (225,714/323,111). Every comparator is much higher: NAMAMI, Ktiv, Digital Scriptorium, HMML, and Fihrist all 100%, Korea/korcis 99.89%, a cuneiform-tablet catalogue 94.68% (the next-lowest).

**Holdout test and outcome:** No holdout test has been run for this conjecture. Evaluate the rival mechanisms against the training evidence alone.

**Status:** Not yet tested; decided only by future increments to this one source.
