Some of the answers. Most of the info in that guide should be taken with a grain of salt.
Use the book for pictures of coins you might want to collect. There are many errors, and a lot of misinformation. There is no real vetting of the coin companies either (ex. the book would lead you to believe Infinitum Coins are high quality coins made by a legitimate full scale company ..when in fact the coins are all absolutely terrible quality and the company is a huge scam which is “located” in Dubai but registered in the British Virgin Islands - a common practice for illegitimate “company’s” . I learned this the hard way as did many others).
I also saw a fake casascius coin listed as legitimate on the site last time I was on it (
https://coinfirm.org/product/s2-1-btc-2013 ). So check out coins you like, then come back here for info. MinerJones and Krogo are both experts who are always happy to help. I am happy to as well if ever needed. Cheers