A man did this in London in 1810, but with everything - chimney sweeps, piano deliveries, priests, lawyers, coal carts, doctors, undertakers, the archbishop of Canterbury...
It brought the whole area to a standstill and the guy won a guinea in a bet and ran away to the countryside
On higher end ones maybe, but this works fine so idk - it's conceivable they both use the same internals just with a different battery mounting geometry
Nah I've got something similar - not exactly like this but the glass tube with heat exchanging mesh and space underneath for a burner is pretty distinctive - then searched "Stirling engine heart arrow" and tons of these came up
What a bargain, right??