In most ways this is a typical bulk-mailed ad card for Hong Kong households.  (Don’t be misled by the name “Tokyo” on the front.)  One side of the card is as you see, showing locations of Best Buy shops along Hong Kong’s MTR lines.  The other side seems to be for property rentals, we’re not sure.  It’s all in Chinese.  What makes this ad card special is that it shows most of Hong Kong’s MTR (metro, subway) system.  We’ve yet to find any locally made postcards that do this.  Grade: 1