If you’re selling in the UK only and value is less than £2500 RMSD is probably the best and most economic way of sending.
Over £2500 then you can use Secursus to insure it. You can send it tracked 24 or 48 declaring the value to RM at £100. Item description as stainless steel timing device or stainless steel measurement tool. Securus insure the full value for a % based fee. You’ll need to photograph a lot of the evidence. Eg: the watch being packed in its box, that box being packed in the shipping box, the labelling and description of contents etc.
It sounds a load of hassle but it’s actually quite straight forward.
I’ve used them three or four times with no hassle. I haven’t had any issues with packages not arriving though. So cannot comment on what they are like in the event of you needing to claim.
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