Reported scarcity, legal history and modern-sweetness generalizations are testimony, not chemical analysis or current market data.
Vintage amaro55–57
Bachman's discussion explicitly allows old bottles to be oxidized, faulty or poorly bottled. Maker recollections suggest formulas and sweetness have changed. Vintage price and age do not by themselves establish superiority; recipe, storage, closure and provenance can confound a vintage/current tasting.
PDF 57
PDF 55
Vintage amaro55–57
Paraphrase checked against the complete user-supplied file and rendered pages. Verification means fidelity to source, not independent truth or publication clearance. Locators are PDF positions; coverage/quality findings are researcher observations, not author claims.
No access → Whiskey Excerpts Database (USWA)
Located paraphrase with researcher annotations; not a verbatim quotation or independent verification of every claim.
Evidence
Bachman's discussion explicitly allows old bottles to be oxidized, faulty or poorly bottled. Maker recollections suggest formulas and sweetness have changed. Vintage price and age do not by themselves establish superiority; recipe, storage, closure and provenance can confound a vintage/current tasting.
Location and context
Vintage amaro55–57. PDF page positions in the supplied 579-page file.
Source: No access. Literature note: 
Annotation
Reported scarcity, legal history and modern-sweetness generalizations are testimony, not chemical analysis or current market data.
Verification checklist
No History or public draft placement made.