This is a Retirement Notice. Paper 73 (v2.0, 9 February 2026, "Feynman's Answer from Icosahedral Geometry") presented α⁻¹ = e⁵ − 6√3 − 1 + 1/(66 + e/93) ≈ 137.035999046, claimed to sit "0.89σ from CODATA 2018 — within experimental uncertainty," supported by a connection to the Euler-Mascheroni constant γ (§6) and to a dimensional-projection tension ε = 1 − π/e^(2/√3) (§7). The paper is retired. The retirement rests on a single decisive fact: two of Paper 73's load-bearing supports have themselves been retired. Its §6 γ-connection cites the (e²+5)/(9e−3) derivation of Paper 15, since retracted (HALT-NULL on the trace-shadow framework). Its §7 projection-tension argument cites the ε mechanism of Paper 14, since replaced wholesale — and Paper 14's own retirement specifically itemised the π ≈ e^(2/√3) near-equality, on which Paper 73's §4 and §7 also lean, as elevating a numerical coincidence to a structural identity by assertion. With those two supports removed, Paper 73's supporting structure is gone. What remains distinctive to Paper 73 is its variant denominator 1/(66 + e/93), which is a fitted worsening of the canonical 1/66: the e/93 term (93 = 66 + D³) is an unmotivated correction with no null distribution. Nothing unique survives. The canonical base formula e⁵ − 6√3 − 1 + 1/66 that Paper 73 shares with the corpus is held, on independent derivations and at honest precision (~50 ppb relative to CODATA, forcing argument open), by Paper 127 (Fine Structure Unified) and Paper 2 (2I Foundations). Paper 73 is marked retired in the index.