Although I've been widely known to mortify friends with my 'dumpster diving' antics, I really did think twice about rescuing these old milk bottles.
What the hell, let's call it extreme recycling.
The embossed text reads 'Conway's Dairy, Merthyr'.
A spot of googling unearthed this image of Conway's Dairy.
Fresh as a daisy and as good as old!

If you don't fancy getting your hands dirty, Bailey's Home and Garden will sell you one of these American milk bottles for £12. A great shop but remember that in Bailey's, a bucket with a rusty hole in it may cost more than a new one!