Dingbat - Help!

[pippaf]

picture looks like hild or short shop assistant handing something to very tall guy and the tall guy is handing back money there is a desk/counter and a till.
It says what is the phrase?

What famous residence does the dingbat show
X I ST
N
G

all I have been able to come up with is Crossing down the street, or Crossing the Street or Existing but no famous residences!!

[boxtops]

residence - 11 Downing Street

[bednobs]

10 down ing street

[boxtops]

^ forget that - it's 10 Downing Street (I read the I in the wrong place!)

[Psybbo]

11 Downing Street?

[TheWinner]

X = 10
down ING
st = street

10 Downing Street

[bednobs]

it's 10 boxy i think - the I is part of the ing isn't it?

[boxtops]

x - Roman/Latin for 10

ING going down the page
ST - street

[bednobs]

lol i'm too slow typing

[bookbinder]

1 giving small change?

[Baldric]

Short changing?

[pippaf]

Thank you :-)