[1] From the very start, the MOB had the character of a mainline railway and, at an early stage, through trains with dining and saloon coaches were introduced.

The creation of the Golden Mountain Pullman Express in 1931 was unfortunately at a time of world economic crisis and this accounted for its lack of success.

The saloon coaches 103–106 built for this train by Compagnie Internationale des Wagons-Lits (CIWL) were sold to the Rhaetian Railway in 1939, where they are still in use (As 1141–44).

The modern successor of this luxury train is the Golden Pass Panoramic Express, which for the past few years has aroused growing enthusiasm.

Winding its way up through the vineyards above Lake Geneva via Chamby, as far as Les Avants, the line passes through the crown tunnel under the Col de Jaman to reach the Saane Valley.

After Saanen the planners would have liked a direct ascent of the Saanenmöser Pass but without the aid of a rack and pinion system this was impossible and the line was diverted to loop around the village of Gstaad, adding greatly to the development and prosperity of the community.

Beyond Gstaad railway station it begins the climb to the head of Saanenmöser Pass, the highest point on the line at 1,270 m (3,937 ft).

On the other side it descends the Simmen Valley to Zweisimmen, where there is a connection to the standard gauge line of the BLS to Spiez.

By the end of the year the MOB was a passenger only operation, however in Spring 2007 the company purchased nine gravel (hopper) wagons and two surplus locomotives from the TPF.

New rolling stock was purchased (* in the list below) to operate this line together with the weekdays school service between Zweisimmen and Saanen.

Since reopening it has been included in the regular operating schedule of the MOB with timetabled connections to the main line services.

In spring 2008, the MOB announced a four-year plan to modernise the railway infrastructure and rebuild stations to bring them all into the 21st century.

At Saanenmöser station, a straightforward relaying and alignment took place through late 2008 to early 2009, which maintained the passing and siding facility at that location.

All were fitted with signs bearing the new "Golden Pass" logo and name alongside the station nameboards, which were retained in their original colours.

One of the smallest stations and halts (Les Combes, between Château-d'Œx and Rougemont) was given a new raised platform during Autumn 2011, leaving only the waiting shelter as original.

Until the end of the 2008 season, it was made up in the following formation which ran throughout between Montreux and Broc Fabrique: In the 2009 timetable the formation was changed and operated between Montreux and Gruyere only with a coach connection to Broc (due to operating problems), as follows: Other trains Montreux–Zweisimmen may be pulled by a Ge 4/4, GDe 4/4 or an ABDe 8/8 and they can have up to five coaches.

In December 2006, the TPF relinquished its freight operations to the SBB Cargo, and its two GDe 4/4 locomotives became surplus to requirements.

Withdrawn and Preserved Items Note 1: Class Be 4/4 after rebuild operate as the centre-car (non driving motor) of a three-car set made up as Bt – BDe4/4 – ABt.

Note 2: Class Be 2/6, No's 7001 to 7004, are listed under the stock owned by the Chemins de fer électriques Veveysans (CEV) but they also work short journeys over the MOB from Montreux to Fontanivent, Sonzier and Les Avants.

220 was outshopped from Chernex in late June 2010, following a press demonstration the previous month, as the first vehicle to be fitted on axle-less, dual gauge bogies to be tested for readiness for the route running to Interlaken.

On 22 June 2007, the MOB gave details to the press that it had placed orders with Raility of Biel for eight new air-conditioned coaches with large panoramic windows and low-floor access and seating.

The first of these to enter full revenue–earning service did so in mid-December 2010 when 231 and 232 were formed as a regular part of the "Golden Pass Panorama" trains 3118/2119/2128/2131 Source : MOB/Raility press release together with personal observation.