I have four mugs that I've been trying to get some information on. I bought my home 5 years ago and I was going through the basement and these mugs were among some of the things left by the previous owner. I'm not sure if they are worth anything at all but I cant find anything on the company Rand. they say made in Sheffield England and they all have numbers inscribed on the bottom and the handle has a designed leaf on the top. if you have any info on the company or type of mug please let me know as I am sadly at a loss, thanks