1959 – The ISDT was back again in Czechoslovakia, in Gottwaldov, September 14th to 19th.
237 riders were registered, including 46 Czechs, 24 Poles, 38 West and 20 East Germans, 21 Russians, 16 Italians, 13 British, 13 Dutch, 9 Romanians, 9 Swiss, 8 ​​Bulgarians, 6 Swedish, 4 Irish and two Danes.
Only 178 riders finished successfully, winning 127 gold medals, 35 silver and 16 bronze.
The type of  sections and regulations favoured the intermediate engine sizes and for this reason in the lower 75 and 100cc classes, only  4 Capriolo 75s were recorded and 3 Sachs Hercules 100.
Gianni Perini from Bergamo on a Capriolo 75 was assigned the number 1 and had the honour of inaugurating the event.
In the 125 class there were 29 teams registered, 65 in the 175 category, 103 riders in the 250, 25 in the 350, 6 in the 500 and 2 in the 650 class.
The teams that were in the Trophy battle were made up of 6 riders on three different cylinder sizes of machinery, all on production bikes.
Despite the good performance by Gilera in the previous events, this year the Italians preferred Moto Guzzi and Capriolo, believed to be more appropriate to gain points in the speed trials, an important decision where the teams all managed to complete the entire section with zero penalties. 
The Hercules 101K with 7.5 hp 98cc GS and the K175 GS 17 hp, had a special feature: a "gear" mounted on the pinion and a foot control, able to multiply the 3x2 and 4x2 gears of their bikes. The demanding route was very selective from the start.
The Czech team, favored by the odds, took ​​a one point penalty already early the first day following the difficulty of Zdenehk Polanka in starting his Jawa within the allotted time.
The same misfortune happened to Henry Vanoncini the morning of the second day, and so the Italians lost some positions.
The race was dominated by the Russians until the end of the third day, but the breakage of the frame on the Kovrovsky 175 ridden by Victor Adajan, which split into two sections of pipe at the steering head made ​​every effort in vain.
After the departure of the British, Italian hopes also were thwarted. On the fifth day, the engine failed on Vanoncini’s Guzzi and for the Czechs the road to victory opened. Czechoslovakia (Vladimír Sedina, Sasha Klimt, Antonin Matejka, Zdenehk Polanka, Jaroslav Pudil and Bohuslav Rouchka and Krivka Manager) won the Trophy followed in second place by the unfortunate Italian  team of Tullio Masserini Guzzi 175, the 125 Capriolo of Carlo Moscheni, Dante Mattioli (Guzzi 175) Gianfranco Saini (Guzzi 235), Jolao Strenghetto on a Capriolo 125 and Enrico Vanoncini on his Guzzi 235.

For the Silver Vase, teams of 4 riders competed in two different engine displacements, riding motorcycles domestically produced or foreign. Once again it was the home side that won the first two places.
The result was not as clear cut as it seems since the Romanian and Finnish teams  who finished respectively in 3rd and 4th places also ended the test with zero penalties and the ranking was decided only with the final speed test.
The A Team Italy (Costanzo Daminelli - 235 Guzzi, Giuseppe Panarari - Capriolo 75, Canzio Tosi - Parilla 125, Bruno Villa - Guzzi 175), was ranked 9th, while the B Team Italy (Walter Reggioli and Lino Cornago - Parilla 125, Angelo Spinelli and Richard Bertotti - Capriolo 75), was ranked only 17th.
Despite no important placings, the Italians still managed to do well, conquering 8 gold medals.
Tullio Masserini, Carlo Moscheni, Jolao Strenghetto, Nino Tagli, Gianfranco Saini, Canzio Tosi, Riccardo Bertotti and Dante Mattioli - and also six silver medals - Gianni Perini, Giuseppe Panarari, Angelo Spinelli, Brunone Villa, Lino Cornago and Enrico Vanoncini.
It is worth noting that Masserini was initially assigned the silver medal and switched to gold only after many months following the favorable reception of a complaint made after the race.

1960 – The 35th edition of the Six-Day was organized in the heart of the Austrian Alps, Bad Aussee, from September 19th to 24th.
The typical Alpine course, the total length of 1780 km, was divided into six stages, all quite demanding, in order to carry out effective selection, day by day and not having to reduce speed to a questionable test to determine the final standings in a handful of minutes.
Registered on the test were 317 riders, who were awarded with 191 gold medals, 66 silver, 13 bronze and there were only 47 withdrawals. In 1960 the teams competing for the Trophy were to be composed of 6 riders with three engine sizes and riding domestically produced motorcycles.
The Italian hopes were wrecked on the first day after the departure of Carlo Moscheni on his Capriolo 125.
Irreparable breakages and disastrous falls penalized, one after another, all the best teams and in the end the victory went to the Austrian crew and its powerful Puch 250, the only ones to end the test with all six riders still in the saddle.
The Italian team made up of Franco Dall'Ara, Daminelli Costanzo, Carlo Moscheni, Gianfranco Saini, Jolao Strenghetto and Nino Tagli was ranked ninth.
The silver vase for which teams of 4 riders competed was given to the splendid Italian crew, consisting of Tullio Masserini, Eugene Saini and Fausto Vergani on a Gilera Giubileo 98  and Luigi Gorini on a Giubileo 124.