1963 – Czechoslovakia made its victory felt and got revenge on the ISDT organisation which was now in its 38th edition. 280 riders perticipated from 15 countries over a distance of 1.571 km.
The epicentre of the event was again the small town of Spindleruv Mlyn, surrounded by forests and mountains, particularly adapted for this type of competition.
The trial started on the morning of 2nd September and it was immediately obvious how demanding the road was – on the first day alone there were 25 retirements.
All ten Italian riders rode Moto Guzzi, in both the Trophy and the Silver Vase and were always high up in the rankings.
Some fears were caused only by Gianfranco Saini, whose rear swingarm suddenly collapsed. Saini was able to remedy it the following morning, the third day, with rods ingeniously constructed during the night and screwed in externally - this allowed him to complete the entire race.
At the end of the sixth day only two teams had no penalties: East Germany and Italy and all was settled within a few seconds, again during the final speed test.
There were two different schools of thought employed – Moto Guzzi with its already old four strokes and the very modern MZ 250 created in precious light alloy, mudguards in fibre glass and the large impermeable filter boxes, very new exhausts which gave more power even at lower revolutions.
This made the MZ a point of reference for the whole sector.
The kings of East Germany, or the GDR, Günter Baumann, Peter Uhlig, Hans Weber, Horst Lohr, Bernd Salewski and Werner Uhlmann, who could count on their bikes power, imposed their supremacy and began a long series of successes that saw them undisputed stars of the 60s.
Richard Bertotti, Franco Dall'Ara, Eugene and Gianfranco Saini, Canzio Tosi and Fausto Vergani ended their six-day in second place with merit and their disappointment was certainly alleviated by the notable Italian success in the Silver Vase with the first place of Louis Gorini, Carlo Moscheni, Giuseppe Panarari and Nino Tagli.
All the ten riders riding Italian Moto Guzzi won many gold medals.

1964 – The right to organize the Six-Days then passed to the winning nation, East Germany.
From September 7th to 12th this was disputed at Erfurt, in the Thuringian forest, in its 39th edition, immediately creating a special situation.
Despite the extraordinary feat of the previous year Italy in fact did not participate, for obscure political reasons related to the fact that the German Democratic Republic was not officially recognized. For the same reasons the West Germans also stayed at home and two great teams with certain aspirations were therefore sadly missing.
The absence of the Italians at the ISDT contrasts with the dynamism of those years that saw the Moto Club Bergamo engaged in the front row on the international scene.
Also thanks to the extensive network of contacts generated by the Bergamo Valleys, in 1964 a European Trophy Regularity trial was established consisting of three tests which united the Valli Bergamasche, the Tatra Trial of Zakopane in Poland and the three days of Strakonice in Czechoslovakia. Needless to say that from this experience a few years later the European Championship of Specialties was born.
Surprisingly, a dozen American riders appeared at Erfurt, divided into two teams competing for the Silver Vase, plus reserves.
The great event of the event itself was the participation of the famous film actor Steve McQueen, much loved by the young, riding a Triumph 650 in the running for the Silver Vase.
Unfortunately he had to withdraw on day 3 because of repeated mechanical failures, but his extraordinary participation greatly amplified the echo of the event, attracting media attention.
Walt Axthelm, Bud Ekins, Cliff Coleman, Dave Ekins, Paul Hunt, Stu Peters, Al Rogers, John Smith, John Steen, Bill Stewart and John Taylor were good riders but, accustomed to the slopes of the Californian deserts, is not well adapted to the narrow paths mountain.
The U.S. team (Bud and Dave Ekins, Steve McQueen and Cliff Coleman, all on Triumphs) was unable to go beyond the 16th place in the standings, while the B team USA (Stewart - CZ 175, Hunt - CZ 250 Peters - Jawa 250 and John Smith - CZ 250) stood at 19th place.
Two women entered at the start, the British, Mary Driver on a Greeves 250 and Olga Kevelos on a Honda 50. Both retired on the first day.
The hosts showed up in force with excellent riders on equally excellent bikes, so much so that only in classes 50 and 75 cc, there were fifteen Simsons.
The start predictions were widely fulfilled, but there were also excitement and unexpected twists.
A few hours from the end, when the GDR was preparing to celebrate the triumphant arrival of their men, the 50cc Simson ridden by Rauhut, who was first in the standings all week, finally stopped a little more than a kilometer from the finish.
The rider could only quickly push the bike up to the tape, thus saving the result and the podium.
The little Simsons of Siegfried Rauhut, Gottfried Pohlan, Lothar and Ewald Schünemann Schneidewind won the Silver Vase, while the six MZ kings, Günter Baumann, Peter Uhlig, Hans Weber, Horst Lohr, Bernd Salewski and Werner Uhlmann completed the work winning the Trophy followed by Britain, the Soviet Union, Sweden, Czechoslovakia, Poland, Austria and Spain.