Why does the Ace of Spades often have the manufacturer’s logo on it?
In Texas Holdem poker, the suits have the same value as each other. So a straight flush 45678 of hearts has exactly the same ranking as the same hand in spades. In many card games though, the spades are the highest ranking suit. And therefore the Ace of spades is the highest ranking card out of the 52 standard ones in the deck. While this does not hold in Texas Holdem poker games, this is true in Bridge for example, one of the most popular card games in the English speaking world. It’s use in popular culture – songs, and the Second World War when soldiers put the card in the side of their helmets to indicate good luck – just carried on that perception. It’s the highest value card in many games, so you are lucky if you have been dealt it in the casino.
But the Ace of spades isn’t important for just that reason. It’s also the card that has traditionally carried the manufacturer’s logo on it. The reason for this goes back to the time of the reign of James 1st of England (who was also James 6th of Scotland) in the early 17th century. He introduced a new tax on playing cards, and decided that the Ace of spades should carry a logo showing the maker of the pack. This was proof that the tax had been paid. So it was lucky for both soldiers in the 20th century, and kings in the 17th!