Cheapest Gold Card I would've thought.
In the good old days of the Annual Season Ticket Holders Railcard, like may others, I used to buy an annual season ticket from Manchester Oxford Road to Manchester Piccadilly for £36 and add on the annual railcard for £5. It used to save me about £200 a year.
Before that there was a short-lived promotion called the Voyager card in the 1980s which anybody could buy and which gave discounts similar to the railcards we have today. But it was only publicized in the Stoke-on-Trent area.
On one memorable occasion, I tried to use it to buy a CDR from Widnes to Sheffield. The ticket office was staffed but the man on duty had never heard of the Voyager card and was unable to issue me with the correct ticket on his rickety wind up machine. APTIS machines had yet to be introduced.
I then had all sorts of agro from the conductor as I had not bought a ticket having had the opportunity to do so. He tried to trick me barrister-style into saying "I refuse to pay my fare" when I was merely trying to pay the correct fare. Further arguments ensued with the chap on the barrier at Sheffield who said he understood my predicament but had to support his colleague. It totally spoiled my day and upset my future wife. I can't even remember whether Bramley beat Sheffield Eagles or not.
Lengthy correspondence then ensued with various levels of BR management and the RUCC. But not one of them could tell me the correct procedure for buying a CDR from Widnes to Sheffield with a Voyager card.
That experience led me to become more active as a rail campaigner.