I've got basement coal that sat around for decades. Interesting that this ink bottle survived. That was in the coal I got from a private exclusive girl's school after advertising 'coal wanted' on craigs. The maintenance guy there provided me with four workers to get the coal out of an old scholhouse boiler room basement on the big modern campus. I gotta tell ya it was a little bizarre carrying spackle buckets of coal past groups of young jail bait going from class to class.
The other place was a great find, beautiful 1800's country house. There I found oil furnace nozzle containers, old wire pieces, blue coal, red coal, nasty pipe insulation, wood pieces that might be from the mine shorring or ties, nails, screws, mouse fur. The other day I had a nosebleed and I'm thinking, oh no, my cache is laced with warfarin and I'm gonna die like a rat in this place