I'd guess at hand made. There doesn't seem to be anything joining them together so not sure how robust they'll be if needed. More scratch bars than crash bars.
"Every county of England, every country of Europe and every (part of every other inhabited) continent of the Earth" ... 83% complete!
What's left? Moldova, Ukraine, Belarus, Russia, Siberia, Eurasia, Central America, Mongolia, China, Central Asia, India, West, East, Central & Southern Africa, Australia & New Zealand.