Technical Query: Typographical & Structural Evidence Of 1955/1943 Overstrike Sequence In Certified 1

Hi everyone,
I wanted to open a technical discussion regarding the physical origin of the 1955 Doubled Die Obverse series, specifically looking past standard single-master hub doubling models and examining structural variations visible across already-graded 1955 DDO specimens.
Based on detailed metallurgical analysis, font geometry comparisons, and mechanical press characteristics, I am presenting a hypothesis that what has traditionally been cataloged as hub doubling reflects a 1955 strike executed over an underlying 1943 font profile on a zero-tin brass substrate.
Key physical parameters for discussion:
Typographical Discrepancy: Microscopic examination of the motto and date lettering on certified pieces reveals a font geometry mismatch. The secondary underlying geometry matches the 1943 font/digit profile rather than a duplicate impression of the 1955 master hub.
Mechanical Execution: The strike alignment and force distribution suggest manual placement via a stationary, hand-fed press (similar to those used for proofing or off-shift experimental runs), rather than standard automated high-speed coin press production.
Metallurgical Composition: Elemental XRF testing on these planchets reveals a zero-tin brass matrix (copper-zinc matrix, 0% tin), matching wartime 1943 shell-case experimental brass stock rather than standard 1955 tin-bearing bronze.
Die Deterioration Stages: Later die-wear iterations (commonly designated as the 'Poor Man's Double') appear to represent progressive degradation of this underlying 1943 font geometry and die state.
Archival Question for NARA / RG-104 Researchers (Attn: @RWB / Archival Specialists):
Has anyone researching Record Group 104 at NARA encountered documentation, superintendent logs, or equipment memos from the Philadelphia Mint between 1943 and 1955 regarding:
Off-spec zero-tin brass blanks or pre-run stock from 1943 being retained, stored, or re-struck?
Off-shift or manual hand-fed press operations involving experimental trial pieces during the mid-1950s?
Looking forward to hearing thoughts from variety specialists and primary-source researchers on these structural markers