The single-manual mechanical instrument was built in 1869 by Franz Rieger from Krnov for 700 gold coins. The instrument is built into a classical organ case with a playing table built into the side of the pedestal. The simple but very practical solution is the register, which is placed without gears directly above the music desk. The pedal is still conceived in the spirit of baroque traditions. It has a short octave and the notes in the small octave are repeated. Thanks to the built-in playing table, the operation of the tone tracker is light and very pleasant for the player. Sonically, the instrument is very successful and is used not only in liturgy but also for concert purposes.
The instrument has been preserved practically in its original condition to this day, and its quality is evidenced by the fact that it has been minimally repaired in the past. From written sources we learn that a minor repair was carried out in 1922 (Václav Poláček)
and in 1955 (František Čálek).
The organ in Olešnice in the Orlické Mountains is the only organ by Franz Rieger that has survived in the Hradec Králové diocese, and it is said to be one of the few surviving opuses by the founder of the once world-famous Rieger company.
In 2019, a complete renovation was carried out here by organ builder Ivan Červenka from Jakubovice for CZK 270 000. A new bellows was made, the non-original zinc prospectus was replaced with high-quality tin pipes and the whole instrument was repaired, conserved, tuned and tuned. The instrument was fitted with gilded carvings in 2020, which were previously missing. The pneumatic discharge instrument was built by Emanuel Štěpán Petr in 1903 (Op. 155). This remarkable romantic instrument is housed in a massive organ case and is rarely preserved in its original disposition and masterful intonation.

The instrument was repaired many times during the 20th century (1931 V. Poláček, 1947 Kutná Hora, 1979 J. Hubený from Protivín, 1993 R. Stehlík from Rohatec), but nobody managed to prolong the life of the not very successful design of the die-outs and the complicated coupling apparatus in the playing table. Therefore, the restoration plan chose the option of converting it into an electric tract. The work was undertaken by Ivo Roháč from Olomouc as early as 2005 and the conversion lasted intermittently until 2018.