Campagnolo used Record for decades, so many styles are Record. Most folk call the first styles Nuovo Record, which is not correct but widely used. they have machined tapered flutes in the crank arms and spider arms, five arms. Super Record used the Record crank with a special BB and chainrings that had the webbing removed. Very late Super Record arms have no flutes on the arms and are decorated in a way similar to yours but used the basic Record shape. Record C, (Corsa) came after, more organic and flowing in shape, four arms visible as noted earlier. There are some other minor changes but very esoteric.

There is one thing one should be aware of, the original bolt hole circle was 151mm (44 teeth min), identified by having about 3mm visible between the chainring bolt to the arm, the later 141mm circle (41t min., but very rare, 42 for practical usage), used a bolt that looks as close to the arm as yours. The later cranks such as yours use an even smaller cricle, allowing inner rings under 41 teeth. Creating a study guide would be a lot of work as you can read.