Severus Alexander, 222-235 AD. AV Aureus (6.31 g), Rome mint, struck 223 AD. 

Laureate and draped bust right. 
P M TR P II COS P P. View of the coliseum (the Flavian  Amphitheater): the building has four stories, the first three are arcades with each containing a statue, and the top being 
  of solid masonry with windows and supports for the wooden 
  masts that held the great awnings which protected the 
  spectators from Rome's fierce sun; at the left, a shrine with 
  statue within; at right, a section of a building's column and 
  pediment (perhaps the temple of Jupiter Victor). 

Calico 3095; Sear II 7825 (= Calico 3095); Vagi 1976. 
Cohen 247 var (silver); Foss. 7 var (AE); RIC 33 var (silver); 
Biaggi 1323 (=Kent/Hirmer 424 = Steinberg 649 = Hunt III 88 = Bank Leu 79, no. 318 = Hess-Leu 24, no. 333; same dies). 

With permission of Ira & Larry Goldberg Auctioneers, Beverly Hills, CA, ebay sale May 2008.
Ex Hess-Leu 24, Calico 3095.
Estimated Value $150,000 - 175,000.