Jacobs from Canada it says that the top was first produced in Denmark and was later manufactured in Canada, being obtainable at any drug store or tobacconist for 25 cents.

• Jacobs的文章里记载了神奇陀螺历史上首次生产出来是在丹麦，并在加拿大量生产。在烟草店里以25分钱销售。