Why is there no Scott serial table?

Scott never published one; the model years come from collector histories of the 299 and 222 lines and from period literature.

How do I tell 299 revisions apart?

By schematic and detail changes — a Scott source counts "no less than 7 variations of the 299C", so the revision letter is a bracket, not a certificate.

What dates a Scott besides the model?

The component codes on the parts: the unit is never older than its newest original component.

The maker's archive

H.H. Scott hi-fi.

H.H. Scott published no serial-number tables, and the conclusion of the long collector threads is that a serial cannot be matched back to a schematic. Dating here means the model revision, the tube complement and the parts inside.

Country: USA
Active since: 1947
Coverage: 1952–2023 · 17 code systems
Dating tier: Mixed coverage
In the archive: 0 series · 17 code systems · 12 models
Years documented: 1952–2023

What dates this maker

Model revision — 299 series revisions are the practical dating evidence.
Tube complement and circuit changes between revisions.
Component date codes on the parts.

Watch out

A Scott serial number does not convert to a year by any documented rule.
Revisions of one model overlap in production: a later revision can be built before an earlier one.

H.H. Scott 99 / 222 / 272 / 296 / 299 / 200 revisions by tube complement, power and dates1952-1969 · 14 rows · Medium confidence

Why a Scott serial number cannot be turned into a date (and what to do instead)1947-1980s · 5 rows · High confidence

Scott 710 turntable era and its rubber-u-joint failure1954-1960 · 1 rows · Medium confidence

Hunts capacitor date code (WHITSUNDAY)1950s-1969 (Hunts taken over by Erie in the late 1960s, probably 1969) · 25 rows · Medium confidence

British year-letter date codes (TCC, Dubilier, Radiospares, Woden, Welwyn)1950s-1960s · 4 rows · Medium confidence

Mullard 'mustard' capacitor date codelate 1963 onwards (used occasionally in late 1963, more frequently from mid 1964) · 3 rows · Medium confidence

Egen potentiometer date code1960-1964 (year letters documented by the source) · 2 rows · Medium confidence

EIA component source/date codeswhole vintage period · 1 rows · High confidence

Safety warnings that apply to any vintage valve hi-fiwhole vintage period · 4 rows · High confidence

Japanese electrolytic capacitor date codes - the shared YYWW mechanicdocumented samples 1993-2023; no maker states when a format started or ended · 0 rows · Medium confidence

Nippon Chemi-Con date code (year digit + bracketed character)2000s production (the repair page was published November 2005) · 2 rows · Low confidence

Nichicon date code (plant letter + YYWW)1990s-2010s (documented 1993 and 2013 samples, same format) · 4 rows · Medium confidence

ELNA date code (four digits, YYWW)1990s-2000s (documented 2000 and 2003 samples) · 2 rows · Medium confidence

Rubycon date code (plant letter + YYWW)1990s-2000s (documented 2002 and 2008 samples) · 3 rows · Medium confidence

Matsushita / Panasonic lot-code date (xYMD), SMD parts2020s SMD parts (documented example decoded as April 2023) · 1 rows · Low confidence

Nichicon month letters J-Z (official notice, power capacitors and reactors)2004 production numbers; the notice itself is dated 2022-04-01 · 4 rows · High confidence

Class A heat, bias and the dating trap - safety notes for this wavewhole Class A vintage period (1967-present) · 3 rows · High confidence

12 H.H. Scott models are catalogued with their production years, specs and safety notes.