Of Brass Letterboxes

We’re driving through Didsbury, something we do pretty regularly on this bus, and I gaze with envy at the large period housing that lines the road, with healthy driveways and giant front doors. A fair few of these houses have been converted into apartments, and I happen to notice that the front door of one such conversion has large letterboxes stacked from top to bottom, such that the majority of the door is in fact made of brass. I imagine the postman pushing letters through each box, on his tiptoes one minute, on his knees the next - poor guy (or girl). I picture them all landing in the same pile on the floor on the other side - anything to amuse myself (it doesn't take much).