The pistol that Sir Malcolm purchases is a Mauser C-96, (broomhandle Mauser) which was modified and used to great effect as Han Solo's pistol in Star Wars.
One of the men employed by Ethan Chandler's father to bring him home, Mr. Kidd, shares a name with a lackey named Mr. Kidd, played by Putter Smith, in Diamonds are Forever, one of the 007 franchise films starring Sean Connery as the British agent. Timothy Dalton also played Bond and Eva Green of course a Bond girl, though not in the same films.
Filters were initially used in European Countries from 1860 to 1920 to prevent particles of tobacco entering the mouth. The first major filtered cigarette, So it is very possible for Ethan to be sharing a filtered cigarette . Marlboro was first American filtered cigarette made for women in 1921, it wasn't until the theme music from The Magnificent Seven (1960) was used with cowboys on horseback smoking Marlboros that it went from $20 million in a woman's brand in yearly sales to $100 million overnight as a man's cigarette. .