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Tesla Coil Spirit of the Bombing Past

✦ Tesla CoilUnusual12d ago
Sell price
29 keys, 56 ref
Buy price
25 keys, 62.66 ref
In keys
29.9 keys
In USD
$65.48 at the Steam key rate
Steam Market asking price
$80.01 asking, not sold

Community price on backpack.tf: 26.0 keys, last changed 2023-12-17 (2.8y ago). The live quote above, 29.9 keys, is 15% higher and last moved 12d 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.

Steam Market asking price: $80.01 — the lowest of one listing for the Tesla Coil effect when we looked on 2026-10-08 01:27 UTC (5d ago). This is what a seller is asking, not what anything sold for. Steam pays out in Steam wallet funds, not cash, and Valve takes roughly 15% at the till — so asking prices there run well above the 29 keys, 56 ref shown above, which comes from the keys-and-metal market on backpack.tf. The two are different markets and are never blended. Steam lists the item as “Unusual Spirit of the Bombing Past”, with no effect in the name — the effect comes from the individual listing.

Price history

64 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.

Tesla Coil Spirit of the Bombing Past sell price, 2025-09-25 to 2026-10-13: 64 observations, from 26.7 keys to 30.9 keys. Sampled evenly across the range.
Observed (UTC)SellBuy
25 SEP 2025 · 03:29 UTC26.7 keys21.8 keys
9 OCT 2025 · 09:24 UTC26.5 keys23.8 keys
19 OCT 2025 · 21:14 UTC25.2 keys22.6 keys
10 NOV 2025 · 01:33 UTC27.3 keys24.6 keys
11 JAN 2026 · 21:35 UTC28.9 keys15.9 keys
30 JAN 2026 · 01:44 UTC28.8 keys18.9 keys
8 FEB 2026 · 22:43 UTC29.4 keys18.4 keys
15 FEB 2026 · 22:40 UTC36.3 keys20.9 keys
1 MAR 2026 · 22:43 UTC36.0 keys21.1 keys
16 MAR 2026 · 02:08 UTC36.9 keys22.0 keys
22 MAR 2026 · 22:07 UTC38.8 keys23.7 keys
16 APR 2026 · 22:30 UTC39.3 keys24.4 keys
28 APR 2026 · 00:32 UTC37.2 keys23.1 keys
10 MAY 2026 · 22:33 UTC39.6 keys24.3 keys
23 MAY 2026 · 00:30 UTC39.2 keys24.3 keys
1 JUN 2026 · 00:30 UTC39.7 keys24.7 keys
15 JUN 2026 · 00:32 UTC38.8 keys24.3 keys
22 JUN 2026 · 17:13 UTC29.1 keys25.3 keys
16 JUL 2026 · 10:43 UTC30.9 keys26.8 keys
21 AUG 2026 · 00:09 UTC15.1 keys13.2 keys
21 AUG 2026 · 20:09 UTC15.1 keys13.2 keys
25 AUG 2026 · 04:09 UTC21.6 keys18.7 keys
20 SEP 2026 · 02:08 UTC20.4 keys17.8 keys
23 SEP 2026 · 22:11 UTC18.6 keys16.2 keys
25 SEP 2026 · 04:08 UTC20.3 keys17.6 keys
26 SEP 2026 · 02:08 UTC24.7 keys21.5 keys
27 SEP 2026 · 18:08 UTC25.1 keys21.9 keys
28 SEP 2026 · 18:08 UTC26.2 keys22.8 keys
29 SEP 2026 · 06:08 UTC27.2 keys23.7 keys
30 SEP 2026 · 06:08 UTC28.1 keys24.4 keys
30 SEP 2026 · 18:10 UTC29.2 keys25.4 keys
1 OCT 2026 · 18:08 UTC29.9 keys26.0 keys
2 OCT 2026 · 19:10 UTC30.3 keys26.4 keys
3 OCT 2026 · 07:11 UTC30.6 keys26.6 keys
7 OCT 2026 · 11:09 UTC30.5 keys26.5 keys
8 OCT 2026 · 15:10 UTC31.1 keys27.0 keys
9 OCT 2026 · 03:09 UTC31.0 keys27.0 keys
11 OCT 2026 · 07:10 UTC31.2 keys27.1 keys
11 OCT 2026 · 19:09 UTC31.2 keys27.1 keys
13 OCT 2026 · 01:09 UTC30.9 keys26.9 keys

Price history in numbers

64 readings since 25 Sep 2025

Over the last 30 days the Tesla Coil Spirit of the Bombing Past's sell price ranged from 18.6 keys to 31.2 keys and is up 51.3% after 27 moves. Over a year it ranged from 15.1 keys to 39.7 keys (up 22.8%). Today's 30.9 keys sits in the middle of its range: the lowest we have recorded is 15.1 keys (21 Aug 2026) and the highest 39.7 keys (1 Jun 2026). The price has moved 63 times since we began recording it — about once every 6 days.

WindowLowHighChangeMovesReadings
30 days18.6 keys31.2 keys+51.3%2728
90 days15.1 keys32.1 keys—3435
a year15.1 keys39.7 keys+22.8%6061

Details

SKU30807;5;u108
Last price change2026-10-01 18:08 UTC
Key rate when recorded62.33 ref

Same effect, other items

the effect across the catalogue

Other effects on the Spirit of the Bombing Past

same item, different effect

Priced similarly

across the catalogue