Community price on backpack.tf: 125 keys, last changed 2025-10-11 (1.0y ago). The live quote above, 106 keys, is 15% lower and last moved 13d 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.
Price history
59 observations
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.
The key axis converts at today's rate. Prices are recorded in metal, so a line that is flat in keys followed the key rate rather than standing still.
Phosphorous Engineer's Cap sell price, 2025-09-25 to 2026-10-10: 59 observations, from 61.8 keys to 11.9 keys. Sampled evenly across the range.
Observed (UTC)
Sell
Buy
25 SEP 2025 · 03:29 UTC
61.8 keys
50.5 keys
30 SEP 2025 · 20:09 UTC
61.7 keys
50.4 keys
19 OCT 2025 · 19:39 UTC
115 keys
103 keys
25 OCT 2025 · 15:57 UTC
109 keys
98.5 keys
17 NOV 2025 · 04:31 UTC
12.3 keys
12.3 keys
23 JUN 2026 · 03:13 UTC
70.2 keys
61.0 keys
9 JUL 2026 · 14:45 UTC
74.5 keys
64.8 keys
15 JUL 2026 · 08:44 UTC
78.8 keys
68.5 keys
3 AUG 2026 · 00:24 UTC
86.7 keys
75.4 keys
13 AUG 2026 · 17:12 UTC
76.4 keys
66.5 keys
21 AUG 2026 · 20:09 UTC
94.3 keys
82.0 keys
22 AUG 2026 · 08:08 UTC
95.0 keys
82.6 keys
23 AUG 2026 · 08:08 UTC
96.3 keys
83.7 keys
23 AUG 2026 · 20:09 UTC
96.6 keys
84.0 keys
24 AUG 2026 · 20:09 UTC
97.2 keys
84.5 keys
25 AUG 2026 · 10:08 UTC
97.4 keys
84.7 keys
26 AUG 2026 · 10:08 UTC
98.0 keys
85.2 keys
26 AUG 2026 · 22:09 UTC
98.1 keys
85.3 keys
27 AUG 2026 · 22:09 UTC
98.4 keys
85.6 keys
28 AUG 2026 · 11:22 UTC
99.0 keys
86.1 keys
29 AUG 2026 · 10:09 UTC
99.3 keys
86.3 keys
29 AUG 2026 · 22:09 UTC
99.9 keys
86.8 keys
31 AUG 2026 · 02:09 UTC
99.1 keys
86.2 keys
31 AUG 2026 · 18:09 UTC
99.1 keys
86.2 keys
4 SEP 2026 · 04:08 UTC
97.9 keys
85.1 keys
5 SEP 2026 · 12:09 UTC
97.5 keys
84.8 keys
6 SEP 2026 · 12:08 UTC
102 keys
88.9 keys
7 SEP 2026 · 00:08 UTC
99.9 keys
86.9 keys
10 SEP 2026 · 20:08 UTC
99.6 keys
86.6 keys
11 SEP 2026 · 12:08 UTC
99.1 keys
86.2 keys
12 SEP 2026 · 14:07 UTC
99.8 keys
86.8 keys
15 SEP 2026 · 04:08 UTC
93.5 keys
81.3 keys
17 SEP 2026 · 14:08 UTC
94.7 keys
82.3 keys
17 SEP 2026 · 22:08 UTC
94.5 keys
82.2 keys
27 SEP 2026 · 02:09 UTC
104 keys
90.7 keys
27 SEP 2026 · 14:08 UTC
108 keys
93.8 keys
29 SEP 2026 · 12:08 UTC
107 keys
93.3 keys
30 SEP 2026 · 00:08 UTC
106 keys
92.4 keys
7 OCT 2026 · 11:09 UTC
106 keys
92.2 keys
10 OCT 2026 · 23:09 UTC
11.9 keys
10.4 keys
Price history in numbers
59 readings since 25 Sep 2025
Over the last 30 days the Phosphorous Engineer's Cap's sell price ranged from 11.8 keys to 108 keys and is down 87.2% after 11 moves. Over a year it ranged from 11.8 keys to 116 keys (down 89.6%). Today's 11.9 keys sits at the bottom of its range: the lowest we have recorded is 11.8 keys (23 Sep 2026) and the highest 116 keys (9 Nov 2025). The price has moved 57 times since we began recording it — about once every 7 days.