JACQUES MASSON-JUSTE UN PIANO
In 2019, JACQUES MASSON-JUSTE UN PIANO signed €525k of contracts with the City of Paris (maximum amounts), mostly in musical instruments, scores, equipment (and maintenance).
Source: the City's contract list (opendata.paris.fr) and the DECP (data.gouv.fr), data as of 29 September 2026.
Juste Un Piano - Guyancourt
registered office in Guyancourt (78280) · headcount 6 to 9 employees · founded in 2004 · SIREN 453673139 · view on annuaire-entreprises.data.gouv.fr ↗
€525k
in contracts signed with the City in 2019, at their maximum amounts
The contracts signed
Largest first.
Pianos 1/4 de Queuesigned on 23 Jul 2013€650kAcquisition de Pianos de Concert lot 6signed on 14 Oct 2015€250kMaintenance du Parc des Pianos des CMA 7 et 13signed on 11 Sept 2015€180kMaintenance du Parc des Pianos des CMA 11 et 12signed on 11 Sept 2015€150kMaintenance Parc de Pianos CMA 7 et 13 lot 5signed on 18 Dec 2019€150kMaintenance Parc de Pianos des CMA 11 et 12 lot 7signed on 18 Dec 2019€150kMaintenance du Parc des Pianos des CMA 19 et 20signed on 11 Sept 2015€120kMaintenance Parc de Pianos des CMA 14 et 15 lot 8signed on 18 Dec 2019€120kYear by year
€€650k in 2013 · €€805k in 2015 (the highest) · €€525k in 2019
Click a year to see its amount.
Maximum contract amounts: what the City paid the company, contract by contract, is not published. A shared lot shows the whole lot’s amount. Source: City of Paris, DECP.