Owned by a friend, this collar is brand new and unused, still with its packaging, and other than being tried on once and finding that it was too small to slip over his rather large Teckels head.
It is classed as a small: 25 - 30cm long by 30mm wide, and still has the plastic Akah tag attached.

24 including postage.

Click image for larger version. 

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This picture shows two collars-only one is for sale!