I have lost a beloved Paul Smith coat and need to find a replacement - please help

[SarfEasticated]

I bought a Paul Smith navy belted trench coat in the Fenwick sale in the spring (had a yellow label if that tells you what range it was). It also had a black splodgy patterned lining. I stupidly left it on a train two weeks ago, and it hasn't been handed in yet. I am going to try to claim on my insurance so would really appreciate some help tracking it down. I presume sending them a link to the coat will help explain it value, and my receipt will show how much it cost.
I am assuming they will give me the money to replace it if so can you suggest where I should start to look? It isn't on ebay, and I can't find anything similar on the PS website.
Thanks in advance shopping queens