I would like to congratulate you on the quality of 4 piece Test Crown cricket ball that I have been trialling at the Bracewell Cricket Academy.
The balls have  retained their shape and form after approximately 130 overs of intensive net practise..The seam has remained hard and the laquer on the hide has retained shine easily equivalent to  the Kookaburra regulation ball used at premier club and representative cricket in NZ.
As a coach I am very particular on the 'coaches best friend ' which is plenty of good practise balls that are affordable, retain shape, stay hard and reward the effort of shining by the bowler.
I have used balls made in Australia , UK and India and I would  put your Test Crown ball up there with the Kookaburra and as a practise ball above the 2 most common other 4 piece balls, used in NZ domestic cricket which are the Platypus and Duke balls. As far as value for money, your ball is far superior to all others as they are less than half the price and perform equally as well.

Brendon Bracewell
Bracewell Cricket Acadamy (NZ)