I have 4 Honda springs which have been sitting in my garage for years and will never get used.

Part number 51401-S30-N21 (two of these, pen marked as Front)
Part number 52441-S30-014 (two of these as well, pen marked as Rear)

While I can't verify the springs actually match the part numbers, I think it's highly likely.

If anyone wants them PM me here on beyond. Located in Midnapore SE.