Reghistory sale recorded
Date precision: monthOctober 2025
Public sale record used by the valuation context.
£4,950
400 RK plate research
400 RK
- Format
- Reverse Dateless
- Authority Issuer
- Croydon
- Era
- Unknown era
- Status
- In Private Ownership
Price History
PWPlateworth estimate
Current estimate
£4,950
EstimateREReghistory
October 2025
£4,950
SaleREReghistory
February 2018
£5,216
SaleDSDVLA Search
February 2018
£4,000
Sale| Source | Date | Price | Type |
|---|---|---|---|
| PWPlateworth estimate | Current estimate | £4,950 | Estimate |
| REReghistory | October 2025 | £4,950 | Sale |
| REReghistory | February 2018 | £5,216 | Sale |
| DSDVLA Search | February 2018 | £4,000 | Sale |
Plateworth estimate
over full record
October 2025
price-change events
single listing
No listing
Plate History
400 RK is a Reverse Dateless registration. Plateworth's current estimate is £4,950 with a working range of £4,208 to £5,693, based on 3 comparable sales. The latest evidence is a sale from Reghistory at £4,950. No active dealer listing is shown, so the page separates the Plateworth estimate from public sale evidence. This page currently shows 3 timeline events from the loaded registration record.
Reghistory sale recorded
Date precision: monthFebruary 2018
Public sale record used by the valuation context.
£5,216
DVLA Search sale recorded
Date precision: dayFebruary 2018
Public sale record used by the valuation context.
£4,000
About 400 RK
Reverse dateless plates place the numbers before the original local index letters, so the registration carries local authority provenance without a year marker. The RK index mark traces back to Croydon, now associated with London. This reverse sequence was issued from the 1950s onwards as earlier dateless runs became exhausted. At 5 characters, 400 RK is shorter than most registrations in this era.
Reverse datelessCroydonLondonAge-neutralShort format
Plate Speak
AOORK
Most likely reading: "AOORK"
Other possible readings
400 RKAOORK400RKInitials
Price Guide for this Format
6 loaded same-format comparable prices shown until active listings are available.
£5,000
Lowest
£5,201
Average
£5,800
Highest
Distribution
<£2.5k0%
£2.5k-£10k100%
£10k+0%
Prices are based on loaded sale evidence and the Plateworth estimate. Latest evidence: October 2025.