When I was young, the glass-cleaning facilities in many street-corner pubs were rudimentary to say the least, so drinkers either hung onto the same glass all night or kept their own drinking vessel, usually a tankard, behind the bar. A few places still accept tankards, but it's much less common now, and in my experience, pewter tankards are rather unpleasant to drink out of, I much prefer a clean glass.
I'm sure many posters here will know of the old practice of 'press gangs' slipping the 'King's shilling' into an unsuspecting drinker's tankard, and that for this reason, many adopted glass-bottomed tankards, so that they could see the coin without fishing it out and taking it into their hand. I have my grandfather's glass-bottomed tankard sitting on top of a cupboard in the kitchen, and it looks like he might have got in a few fights with it!

Unfortunately, in later life my grandmother, through one of her numerous old pals in the cutlery trade, started having things 'dipped' at one of the factories where they did silver-plating (EPNS). She had this done with the tankard, which had long been unused, but because of the glass bottom it couldn't be completely submerged, and so on the inside, the silver-plating doesn't go right down to the bottom. I wish she'd just left it alone!
I love the look of the patina on old tools as well as knives, and sometimes buy old tools I have little use for, simply because they are so beautiful. This is a very old leather workers knife, a Lunette (by Dixon), which I gifted to ScruffUK, the only other example I've seen is in the Birmingham Museum, and that doesn't have the original sheath, as this one.
I wasn't sure what this knife was when I bought it, but it turns out to be a mortician's Heavy-Cartilage Knife (by Thackray of Leeds), so the patina has something of the macabre about it!
