Thanks for your opinions, oh wise readers.
I have decided not to buy that coat.
The boy thought it made me look like a little girl in an oversized grown-up's blazer. Not that I have anything about oversized as a fashion style, only it isn't so styley if the wearer is short enough to pass for an actual little girl (albeit not as smooth-faced or bright-eyed).
Also, although I like the green - it's not my preferred colour for a coat. I'd rather it was a deep plum or a bright violet.
And, to borrow from the Project Runway judges - it doesn't look expensive enough.
But it has given me the idea of sewing my own coat. I like these two - the orange one in the top picture and the pink one in the bottom picture:
Of course I would start with, say, a dark denim spring coat - then, if all went well, go on to a nice tweed winter coat in a similar style. By the time I got through all that cutting and fitting and sewing and re-sewing, it would be the right time to wear winter coats again!
Or maybe that is too ambitious for someone who has only made one good buttonhole in the last 20 years...