Eurasia had appeared in 1976. It was announced as an inferior model of Diamond which was a high class model of Bridgestone.
The front triangle of the frame was made of Cr-Mo, and the front fork was made of high-tension steel. There were a lot of optional parts such as carrier (front and rear), flashlight, bag, bottle, brake lever pads, toe clips, and straps. Eurasia was sold as "System-sports bicycle".
Since then, Eurasia went through a number of model changes or added new model in the lineup. Eurasia had made a great epoch of sports bicycle with other mass-production bicycle in same class, and had fascinated young people who were interesting in sports bicycle. I used to come across Eurasia bicycle on the road or at youth hostel when I was on the cycling in those days.

Here is the model in 1979. From the end of 1970s to first of 1980s, I had worked at the bicycle shop in Tokyo as a part-timer after the school. The main commodity at the shop was city bicycle. However, several students of high school or university visited to buy Eurasia before spring or summer holiday every year and went long distance touring. I had composed Eurasia earnestly for them and suggested them a carrier or a bag which were optional parts. I also told with them about the course plan. Sometime I went one-day trip along with them.
I used to be delight when they stopped by the shop with sunburned face after they got back from the touring. I asked if Eurasia which I composed for them had made trouble.

Catalog was offered by Mr.I.K

This is the front cover. It's very simple. The image invited cyclists to explore the vast Eurasia?

The catalog explained about the trait of the seven models of this year through first two pages. BS original forge frame end was used to Atlantis later, too.

The frame was designed according to the standard skeleton of those days.
There is a photo of a fender for Rinko with the explanation of touring model. As for BS touring model, the fender was not separate type. A diamond shaped steel plate was attached to the hidden-guard-screw on the seat-stay bridge. From the plate, you insert a hex bolt and screw to a nut on the back side of the guard. I think that this method was used for avoiding the deterioration of strength which was caused by choosing the separate type fender and for showing the shape of fender shapely. I can feel an adherence of a designer in the diamond shape of the plate.

The designer must have had an image of the support plate which was used for a fender of Rene Herse. Here is large image.

Here were Eurasia-touring model and Grand-touring model which was equipped with high grade parts. The frame of Grand-touring model was upgraded, equipped with forged fork ends and a small seat pin plinth.
As for the gear combination, the front was 48-34; the rear was 15-24. The low side was almost same as present compact crank.

The outer receiver which was attached to the seat pin was a pendulum type (so-called Rene style). In comparison with the original, the shape was not so good. However, it was useful because it had a slit for pulling out the wire. I used to buy it from BS as a repairing part, and attached it to my randonneur bicycle.

The mount of a head light was neat, because it was covered by black plastic.

Here are Sportif and Grand-Sportif. The models of this year were not same as 1982 model. The center-pull brakes were not direct-attached type yet.
As for the gear combination, front was 50*42, and rear was 15 -24. It was suitable for Sportif model of those days. The low side was higher than present bicycle.

The reflector on the rear fender was called Koban type by BS. This was similar to French reflector Ulo of those days.

Fast-riding was similar to present road-racing bicycle which is equipped with clincher. However, the tire (28C) was slightly wider.
Grand road-racer was equipped with tubular tires according to the style of road-racing bicycle of those days.
As for a gear combination, Fast-riding was 52*42 (front) and 15-24 (rear); Grand Road-racer was 52*42 (front) and 13-21 (rear), it was 6-speed model.

Road-racer was equipped with cassette hub, chain-wheel, and derailleur of newer model Shimano 600 EX. 31 years have passed since cassette free appeared.

Lady was composed of the Mixte frame, center-pull brakes for weak women, all-rounder handlebar, and Gauthier saddle.
As for the gear combination, front was 48, rear was 15-24.

This is the chart of "System parts". Carrier, pannier stand (those were not strong enough), flashlight which contained 3 pieces D size battery, and several kinds of bags were also prepared. Customer could buy several items which needed for their cycling from this maker option.
The bags were great. Other than cotton bag, there were lightweight nylon bags which had traditional shape. We can imagine the planning and development ability of Bridgestone of those days from those of bags.

The last is the specification chart. You will be able to know about the parts composition of middle grade mass-production sports bicycle of those days through this chart.

As I said, the small parts which were used for Eurasia seem to be affected by Rene Herse and Japanese high grade custom bicycle. The producer must have been an ardent cyclist.

There were a number of cyclists who began cycling with Eurasia, and have gone cycling continuously. And some people had restored Eurasia recently, and ride again. There must have been a lot of people who have a brilliant recollection with Eurasia.