Unusual design

These are 2 of 4 windows over one of the shops in Wellington. I'm not sure if I've noticed them before but they are rather attractive. I suspect they were a sod to make though!
Today I ordered the bits to renovate my aged Dyson (which Dyson no longer service or supply parts for) and although they will be pattern parts they will I'm sure do the job and save me a lot of money.
I called in on someone who said their cleaner (which they were given they hastened to add) cost £1000......! Apparently the donor found it too heavy to take upstairs - at that price I would expect it to go on its own, do the cleaning and come back down to put itself away!!