Holofile
Probopass 55/114 Steam Siege

STEAM SIEGE

Probopass 55/114

Probopass is card 55/114 in Steam Siege (STS), a XY set, released on August 3, 2016. It’s a Rare illustrated by MAHOU. It comes in 2 printings: Normal and Reverse Holo. A Near Mint Normal copy has a market price of $0.27 as of October 17, 2026, unchanged over 30 days.

Market price · Near Mint · Normal

$0.270% in 30 days

Jul 19, 2026 · $0.27Low $0.26 · High $0.27Oct 17, 2026 · $0.27

As of October 17, 2026. Prices are estimates from third-party market data and are not offers to buy or sell. Holo10 in the Holofile app adds 6-month, 1-year and all-time charts.

Number
55/114
Rarity
Rare
Artist
MAHOU
Pokémon
Probopass
Released
August 3, 2016

Printings and prices

Normal

Ungraded
ConditionMarket30 days
Near Mint$0.270%
Lightly Played$0.180%
Moderately Played$0.23−32%
Heavily Played$0.19+90%
Damaged$0.16+33%

Reverse Holo

Ungraded
ConditionMarket30 days
Near Mint$0.41−2%
Lightly Played$0.35+6%
Moderately Played$0.29+12%
Heavily Played$0.230%
Damaged$0.100%
Graded
GradeMarket30 days
BGS 8.5$11.000%

Market prices as of October 17, 2026: in US dollars unless marked. Prices are estimates from third-party market data and are not offers to buy or sell.