I have a tin hat which I bought several years ago at "the Barras" in Glasgow for £20. On the inside of it, scraped into the metal, is the word "M'Cullochs" and the number 1702661. (Probably, his name was McCulloch and he was just meaning that this was McCulloch's hat)
There are a few more words: "Cardross" "Derby" and "Barrowhead" or Burrowhead.
I was wondering if it is possible to tell from only a regimental number and a surname what regiment he was in(?)
I know there is a Cardross in Dumbartonshire, so he was likely Scottish.
I have no idea if this is WW1 or WW2. The strap is still attached to the tin hat. Were the WW1 tin hats identical to WW2 tin hats?
If I could identify living descendants of this man, I would like to return it to them.