Here is the catalog of Simplex in 1978. Simplex is familiar to those who began cycling tour around 1960s.
JUY RECORD60 which was the highest grade slide shaft type rear derailleur in the 1950s had won victory regularly at the several races such as Tour de France. However, as for so-called pantograph type derailleur, Simplex couldn't compete with Campagnolo and Huret. JUY EXPORT 61 which was announced in 1962 was the first model. Later Simplex had announced PRESTIGE which was made of Delrin. Since then, derailleur which was made of Delrin became main product.
PRESTIGE and SUPER COMPETITION must have been familiar to cyclists who belonged to my generation. Because of the double tension, those models had a big capacity, were easy-to-use for randonneur bicycle which had wide gear ratio. Moreover, when we put the bicycle into the Rinko bag, and hanged the chain on the chain hook, the rear derailleur turned to upside automatically because of spring. Therefore we could decrease the breakage accident of rear derailleur during Rinko trip.

However, it must have been hard to endure the stage-race because of Delrin material. Therefore aluminum model SUPER LJ right after announcement was used for the Peugeot bicycle of Bernard Thevenet who had won victory at the Tour de France in 1975. And then, the product which combined Delrin and the aluminum also comes to be released one after another.
However, Simplix could not compete with big three brothers such as Campagnolo, Shimano, and Suntour, because of the difference of products function and the new conception "Group-set". Simplex had lost the market share gradually along with Huret.

This catalog was A4 size in the folding condition. I spread it for copy. Moreover, I also prepared large photos. I'm very sorry that the quality of the image was not good, because I copied the copy of the original.

The catalog was offered by Mr. K. H

The French word DERAILLEURS, traditional mark, and address were printed on the front cover. In the lower side, the name of the company founder LUCIEN JUY was also printed.

Here is the large image.

All products of front derailleur, rear derailleur and sifting lever were shown.
As for rear derailleur, seven models from left side were standard type; the rests were high grade model LJ1000, LJ4000, SLJ5000, and SLJ6000. In the times of this catalogue, there is already no specific name such as "PRESTIGE". There were several letters of alphabet after the model number. Those meant the form of pulley cage and presence or absence of the fork end bracket.

1. The form of pulley cage
CP: racing type, T: sports type, GT: touring type (long cage)
2. Presence or absence of the end bracket
P: end bracket, SP: no end bracket (direct attachment on the fork end).

For example, S001 T/ P of the second model from the left was the sports type and had a fork end bracket. LJ4000 CP/ SP of the third model from the right was a lightest weight (177 grams) racing model and was attached to the fork end directly.
Front derailleur also had same kinds of letter of alphabet. Three models of the left were slide type; those models already became classic in those days. I loved those models and used for long time.

Sifting lever can be classified into the standard type and the retro friction type. As for the standard type, there must have been a number of cyclists who had used the second and fourth model from the right. Retro friction type was a easy-pull model that one-way clutch and spring were built in.
I had heard that it had been used at the professional race as a combination with Campagnolo derailleur.

Large size photo: left side, middle, right side.

Here are the products other than derailleur.
There must have been a number of cyclists who had used the seat post and the double rings which were fixed by the five pins. The double ring was thin, and distorted easily. But I liked the combination of 46* 28 rings and Stronglight 49D cranks.

Large size photo: left side, right side.