Trenchcoat. Why not?

[hectorm]

Problem now is whether to hang onto the original purchase to wear on the occasion of really horrid train / tube journeys, or donate to my daughter's vintage clothes emporium.

Not a real problem. Since your original purchase is single breasted, I would keep them both leaving the double breasted with warm lining for winter (or when you have to carry your grenades)
To my wife despair, I've always been very reluctant to get rid of a garment even if I have a duplicate. Closets have suffered, but time has told me I've been right to hang onto the older pieces. There's a special pleasure in carelessly wearing, soiling and battering an older coat, knowing you have another one in line.

[Melcombe]

To my wife despair, I've always been very reluctant to get rid of a garment even if I have a duplicate. Closets have suffered, but time has told me I've been right to hang onto the older pieces. There's a special pleasure in carelessly wearing, soiling and battering an older coat, knowing you have another one in line.

Thanks H

You have, I believe, given a suggestion that merits printing out and framing.

And hanging in a conspicuous position (at Mrs M's head-height) on my wardrobe door.

[rjman]

If one wants, there is a gorgeous Sulka trenchcoat (from its final years of existence) in Belseta on eBay right now.