This is three kilt pins, all from the 1950s, all from a member of the Seaforth Highlanders of Canada (Mackenzie tartan).

The smallest one, which is 2 1/2", is silver-plated brass.

The 2 3/4" is silver or silver-plated brass.

The longest one, which is 3 3/8", is silver.

For more, go to my Ebay Store at https://www.ebay.ca/str/starcanadianseller

Please note that I do not accept returns; all sales are final.