Community price on backpack.tf: 2.88–3 ref, last changed 2025-12-28 (8mo ago). The live quote above, 3.44 ref, is 19% higher and last moved 4h ago. They are different measures: the quote is what traders and bots are asking and bidding on the classifieds right now, and it moves for thousands of items every day; the community price is a suggestion accepted by vote, which changes only when someone argues it should. A quote well away from the vote is usually a price that is about to be re-argued. Community prices from backpack.tf, read under an hour ago.
23 sold on the Steam Community Market in the 24 hours to 2026-08-30 04:08 UTC (7d ago), listed there as “Head Mounted Double Observatory”. That is a different market from the prices above: Steam takes roughly 15% and pays out in Steam wallet funds rather than cash, so its prices sit above what an item realises elsewhere. Volume is unavailable for unusuals — Steam’s name for one leaves out the effect, so every effect shares a single listing.
Price history
Interactive chart. Press the left and right arrow keys to move along the series, Home or End to jump to either end, Escape to clear.
| Observed (UTC) | Sell | Buy |
|---|---|---|
| 25 SEP 2025 · 03:29 UTC | 3.22 ref | 2.77 ref |
| 11 OCT 2025 · 23:26 UTC | 3 ref | 2.77 ref |
| 2 NOV 2025 · 14:01 UTC | 3 ref | 2.88 ref |
| 23 NOV 2025 · 22:55 UTC | 3 ref | 2.66 ref |
| 8 DEC 2025 · 06:55 UTC | 3.33 ref | 2.88 ref |
| 30 DEC 2025 · 14:57 UTC | 3.33 ref | 2.77 ref |
| 22 JAN 2026 · 13:46 UTC | 3 ref | 2.88 ref |
| 8 FEB 2026 · 22:45 UTC | 3.11 ref | 2.77 ref |
| 3 MAR 2026 · 00:43 UTC | 3.11 ref | 2.88 ref |
| 22 MAR 2026 · 12:08 UTC | 3.11 ref | 2.88 ref |
| 19 APR 2026 · 18:31 UTC | 3 ref | 2.88 ref |
| 10 MAY 2026 · 18:34 UTC | 3 ref | 2.88 ref |
| 24 MAY 2026 · 18:32 UTC | 3 ref | 2.88 ref |
| 15 JUN 2026 · 08:33 UTC | 3 ref | 2.77 ref |
| 5 JUL 2026 · 17:11 UTC | 3.11 ref | 3 ref |
| 29 JUL 2026 · 20:45 UTC | 3.44 ref | 3 ref |
| 21 AUG 2026 · 10:09 UTC | 3 ref | 2.88 ref |
| 22 AUG 2026 · 06:08 UTC | 3.44 ref | 3 ref |
| 23 AUG 2026 · 02:09 UTC | 3 ref | 2.88 ref |
| 23 AUG 2026 · 14:09 UTC | 3 ref | 2.66 ref |
| 23 AUG 2026 · 22:09 UTC | 3 ref | 2.88 ref |
| 24 AUG 2026 · 12:09 UTC | 3.11 ref | 3 ref |
| 24 AUG 2026 · 22:09 UTC | 3 ref | 2.77 ref |
| 25 AUG 2026 · 12:09 UTC | 3 ref | 2.77 ref |
| 26 AUG 2026 · 04:09 UTC | 3 ref | 2.66 ref |
| 27 AUG 2026 · 02:10 UTC | 3 ref | 2.88 ref |
| 27 AUG 2026 · 10:09 UTC | 3 ref | 2.66 ref |
| 28 AUG 2026 · 04:09 UTC | 3.11 ref | 2.77 ref |
| 28 AUG 2026 · 12:08 UTC | 3.11 ref | 2.77 ref |
| 29 AUG 2026 · 00:09 UTC | 3.11 ref | 2.77 ref |
| 29 AUG 2026 · 16:09 UTC | 3.11 ref | 2.66 ref |
| 30 AUG 2026 · 04:10 UTC | 3.11 ref | 2.66 ref |
| 31 AUG 2026 · 22:10 UTC | 3.11 ref | 3 ref |
| 1 SEP 2026 · 18:08 UTC | 3.11 ref | 2.88 ref |
| 2 SEP 2026 · 06:09 UTC | 3.11 ref | 3 ref |
| 3 SEP 2026 · 10:09 UTC | 3.11 ref | 3 ref |
| 3 SEP 2026 · 16:08 UTC | 3.44 ref | 3 ref |
| 4 SEP 2026 · 02:08 UTC | 3.44 ref | 3 ref |
| 4 SEP 2026 · 12:08 UTC | 3.11 ref | 3 ref |
| 5 SEP 2026 · 14:09 UTC | 3.44 ref | 3 ref |
Price history in numbers
113 readings since 25 Sep 2025Over the last 30 days the Head Mounted Double Observatory's sell price ranged from 3 ref to 3.44 ref and is up 10.7% after 16 moves. Over a year it ranged from 2.88 ref to 3.66 ref (up 6.9%). Today's 3.44 ref sits in the upper third of its range: the lowest we have recorded is 2.88 ref (1 Jun 2026) and the highest 3.66 ref (22 Feb 2026). The price has moved 37 times since we began recording it — about once every 9 days.
| Window | Low | High | Change | Moves | Readings |
|---|---|---|---|---|---|
| 30 days | 3 ref | 3.44 ref | +10.7% | 16 | 68 |
| 90 days | 3 ref | 3.44 ref | +14.8% | 21 | 77 |
| a year | 2.88 ref | 3.66 ref | +6.9% | 37 | 113 |
Details
| SKU | 30872;6 |
|---|---|
| Last price change | 2026-09-05 14:09 UTC |
| Key rate when recorded | 63.11 ref |
Priced similarly
across the catalogue| Item | Value | Updated |
|---|---|---|
 Cabinet Mann | 3.44 ref | 4h ago |
 Genuine Prinny Pouch | 3.44 ref | 2h ago |
 Treehugger | 3.44 ref | 2h ago |
 Mann Co. Supply Munition #85 | 3.44 ref | 17d ago |
 Strange Part: Taunting Player Kills | 3.44 ref | 8h ago |
 One-Man Convoy | 3.44 ref | 4h ago |
 Strange Trickster's Treats | 3.44 ref | 2h ago |
 Rail Spikes | 3.44 ref | 2h ago |