A Cybernetic Hand under the magnifying glass beside the appraisal guide

Probably Stolen Appraisal Guide: Ranks, Fakes and Food Stamps

How appraisal works in Probably Stolen: fee formula, ranks, why appraisal customers stop coming, every Ribwich counterfeit rule, Plasma values and how to spot fake food stamps.

Light spoilersUpdated Sourced from published guides and player reports, not our own runs

Quick answer

You inspect an appraisal item, send an estimate, and earn a base fee plus a share of that estimate. An estimate within 5% of the true value is Perfect. Each rank unlocks harder items and more customers, and Master Appraiser pays the most per job.

On this page

Skip the maths

The Appraisal Calculator gives you the true value and checks Ribwiches for counterfeit faults. Nothing to download.

How appraisal works

An Appraiser Board member offers you membership around Day 8. After you join, customers bring items marked as appraisal items. Inspect the item with the Magnifying Glass, work out its value, and press Send Estimate.

Your fee is your rank's base fee plus a percentage of your estimate. A Perfect Junior appraisal of a 300-credit item pays 20 + 15% of 300, or 65 credits.

GradeYour estimate is within
Perfect5%
Excellent10%
Good15%
Mediocre25%
AwfulMore than 25%

Ranks

RankBase feePoints to promoteCustomer chance a dayUnlocks
Junior Appraiser2010033%Cybernetic Hands
Appraiser4015042%Ribwich
Senior Appraiser6025048%Plasma Cartridges
Master Appraiser100None55%No new items

A failed promotion exam makes you wait 7 days before you can retry. Joining costs 85 credits on the two easier difficulties, 170 on Thin Margins and 255 on Red Ink.

Why have appraisal customers stopped coming?

This is a common forum complaint, with one player reporting 15 days without one. The published daily chance is only 33% at Junior rank, so dry spells happen. One player thinks your display case sign queue also matters, but that isn't confirmed.

Cybernetic Hand

Start from 100. The minimum value is 50.

FeatureOptionChange
MaterialAluminum Alloy+0
Carbon Composite+50
Gold Plated+200
ConditionWears-35
Damages-85
ControlEMG+0
EMG++45
Neural Interface+120
Unspecified-60
Add-onsArmored+50
Blade+80

Two sets add a bonus. Tactical (+100) needs Carbon Composite, EMG+ or Neural Interface, no wear, and both add-ons. Deluxe (+200) needs Gold Plated and Neural Interface with no wear.

Ribwich

Start from 150. Any counterfeit or missing packaging is worth 40.

A Ribwich is counterfeit if any of these apply:

  • The production date is missing or outside January 425 to December 429 and January 432 to December 438.
  • The packing facility number is missing or outside 01 to 35. A factory #38 is an instant fake.
  • It has only one Deluxe feature, either the sesame bun or the extra pickles.
  • The Davre logo is missing or wrong.
  • It's from the second run and the sticker is missing or wrong. First-run Ribwiches have no sticker.
ConditionChange
First production run+80
Produced 01/425 or 12/438+50
Facility 01, 02, 05, 08, 21 or 34+50
Facility 07, 15, 18, 26 or 31-50
Deluxe Edition (both features)+300
Double Meat Patty+800

Plasma Cartridge

Start from 300. The minimum value is 90. Players find wear the hardest part, so compare the cartridge with the guide image before you commit.

AttributeChange
Light Wear-45
Heavy Wear-90
Cracked-150
Exposed Screws-30
Reinforced+60
Low-Grade color (anything not Standard or High-Grade)-150
High-Grade color+150

The manufacturer adds a bonus only if everything matches:

ManufacturerConditionColorBonus
Wild's Rides (WLD)AnyLow-Grade or Standard+60
ZhongHua Shipbuilding (ZHS)None or ReinforcedStandard+120
Ignition Lab (IGN)NoneHigh-Grade+750
Republic Naval Requisition (RNR)Any except cracksStandard+120

Spotting fake food stamps

Genuine stamps only come in 40, 80, 120, 160, 200 or 240 credits. Any other value is fake.

  • Security seal: 160, 200 and 240 must have one. 40, 80 and 120 must not.
  • Lettering: It reads REPUBLIC SOCIAL PROGRAM in a normal font. Misspellings, bold type, odd colors and misalignment are fakes.
  • Logo: The genuine emblem is a round crosshair.
  • Chip: Every stamp needs an intact chip, and a damaged chip makes even a real stamp unusable.

Use the Magnifying Glass's Counterfeit Check, tick the fault and press Confront. A wrong accusation costs reputation, and you shouldn't trust a "Genuine" label because labels can be altered.

Sources

  1. Appraiser Board fees and every item’s value — AllThings.How, 2026-10
  2. How to spot fake food stamps — AllThings.How, 2026-10
  3. Discussion: appraisal customers stop coming — Steam Community, 2026-10-31
  4. Discussion: factory numbers above 35 — Steam Community, 2026-10-29

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