The 1954 S Nickels are business strikes. Actually 1954 was the last year that the San Fran Mint struck Nickels until they resumed production in 1968 with the proofs. 1954 proofs however were struck at the Philly mint. Now after the night I had with the RPM thing I am not even going to comment on weather this $6000 coin is a DDR or not. I’m not your guy. What I do know is that this coin is not labeled as a variety by PCGS. The owner or seller is just claiming that it is. Weather it is or not, I dont know. Is it worth that price? In that holder, IMO no. A regular 1954 S in MS66 is generally $100 or less. NGC price guide has them at $75. These coins do not have to have steps to get a grade this high or even higher. As long as the coin meets the criteria for the grade, the steps can be good or not so much. Even the steps on this coin, as flat as they are, would not keep it from grading at a 66. The 54 business strike is one of the more rare Jeffs to have steps. The difference in price can be astounding when you get a coin with a FS designation. This coin is a great example. MS66 NGC price guide value is $75. MS66-5FS NGC price guide value is over $22,000. As always, a coin is only worth what someone will pay for it. I think when they refer to “double steps” they are talking about the DDR aspect of the coin. If it is an actual DDR, that may change the game and the price. The actual steps are pretty much non existent as you can see. As far as your coin, it looks to have that light gold toning that is fairly common with Nickels. I know I droned on for a bit but I hope this helps you out a little.