Leather saddles today are miles better than those old Adga, especially if the Adga got water-soaked a few times. Brooks of the old days were thought to be really good, and some of us still think so.

As far as touring saddles, it depends what you mean by touring. If a 3-speed or a hybrid (nearly upright seating position) is your touring bike, then you'd be best off with a wider saddle like a B67 or if still made a B72. If you tour with downturned bars like most multispeed bikes have, the B17 should be a good choice - can't really say how its dimensions relate to the old Adga. If you will ride a bike that has a deeper lean (maybe back lean 45 degrees or deeper?), the Brooks Pro and B17 Narrow become good options.

The width of your pelvis as defined by your sit bones at the lean angle, rather than your blue jeans width, is also important. Specialized dealers have a gadget for measuring this distance, and can correlate it very readily to their saddles which you might also like.

There's way too many saddles on the market.