Pullman (116) in 2004 and two Shenfengs (603 and 607), in 2004 and 2005, respectively. The five ex-St. Gallen trolleybuses never performed to ETCE's satisfaction under the low overhead-line voltage in Valparaíso, about 500V–550V as compared with 600 V in St. Gallen, and they were used in service only briefly – most in 1992 only, with one (142) in sporadic use until 1995 or early 1996. They then were stored until being scrapped in 2008, except for No. 142. That sole remaining St. Gallen vehicle was installed at Barón terminus (on Avenida Argentina at Calle Chacabuco) in a semi-permanent arrangement, after being extensively modified inside for use as a sales outlet for tickets and souvenirs and for use by drivers and supervisors. By 1992 only one of the older (1946–1948) Pullmans remained unrebuilt and still serviceable, 1947-built No. 814. ETCE's longtime president, Pedro Massai, decided to keep No. 814 in original form, due to its appeal as a heritage vehicle, No. 814 having become the oldest unmodernized trolleybus still in normal service anywhere in the world. Pullman 814 was damaged by fire in August 2003, but ETCE repaired it, and the unique vehicle returned to service in December 2003. It remains in regular service in 2017. In July 2003, the system's 15 remaining Pullman-Standard trolleybuses, built between 1946 and 1952, were accorded National Historic Monument status by the Chilean government's , the formal decree of this being signed on 26 September 2003. They are the oldest trolleybuses still in regular service anywhere. Also, Valparaíso has long been the only city in the world where Pullman-built trolleybuses still operate in revenue service. 2010s: Ex-Lucerne vehicles In March 2014, a contract was signed for the acquisition of ten secondhand trolleybuses from Verkehrsbetriebe Luzern, the operator of the Lucerne trolleybus system, in Switzerland, by Trolebuses de Chile SA (TCSA), operator of the Valparaíso trolleybus system since 2007 (see below). The vehicles concerned were built in 1989 by NAW, but were still younger than every vehicle in the TCSA fleet but one (a 1991 Shenfeng unit), and much younger than most, as the next-youngest vehicle in the fleet at that time was built in 1966. They are 12-meter, two-axle trolleybuses and were the first trolleybuses acquired by the system since 1992. The first vehicle arrived in Valparaíso on 28 June, followed by the other nine between September 2014 and January 2015. The start of