21 SX plate research

21 SX
Format
Reverse Dateless
Authority Issuer
West Lothian
Era
Unknown era
Status
In Private Ownership

Price History

£0£15k£30k£45k£60kMar 2021Jun 2026

PWPlateworth

Current estimate

£4,433

Estimate

DVDVLA

March 2021

£6,630

Sale
Approx value
£4,433

Plateworth estimate

Price Change

single price point

Last Sale
£6,630

March 2021

Sale Records
1

1 source

Format Median
£3,300

119 same-format sales

Vs Format Median
+34.3%

estimate vs cohort

Plate History

21 SX is a Reverse Dateless registration. Plateworth's current estimate is £4,433 with a working range of £4,167 to £6,833, based on 1 comparable sale. The latest evidence is a sale from DVLA at £6,630. No active dealer listing is shown, so the page separates the Plateworth estimate from public sale evidence. This page currently shows 1 timeline event from the loaded registration record.

  1. DVLA sale recorded

    Date precision: day

    March 2021

    Public sale record used by the valuation context.

    £6,630

About 21 SX

Reverse dateless plates place the numbers before the original local index letters, so the registration carries local authority provenance without a year marker. The SX index mark traces back to West Lothian, now associated with Scotland. This reverse sequence was issued from the 1950s onwards as earlier dateless runs became exhausted. At 4 characters, 21 SX is shorter than most registrations in this era.

Reverse datelessWest LothianScotlandAge-neutralShort format

Plate Speak

RISX

Most likely reading: "RISX"

Other possible readings

21 SXRISX21SXInitials

Price Guide for this Format

119 same-format sold records across 115 plates currently loaded.

£2,000

Lowest

£4,044

Average

£14,110

Highest

Distribution

<£3k36%
£3k-£10k63%
£10k-£50k1%
£50k-£100k0%
£100k-£250k0%
£250k-£500k0%
£500k+0%

Prices are based on loaded sale evidence and the Plateworth estimate. Latest evidence: March 2021.