Cartridge without serial?

Here is a good story... Taylor Made golf clubs were having a high rate of return/defective/failures whereby the shaft was breaking on their drivers........

Wooow...unbelievable!

@mammothguy54 I had heard the story about the Taylor Made clubs before. OTOH, it is interesting that there could be a company doing ’knock-off’s’ of cartridges like the Koetsu’s and the Benz’s. Albeit copying a cartridge could be a relatively easy enterprise, assuming that one had access to a manufacturing facility that knew how to make cartridges...and could deal with the very small parts etc., While I don’t believe there is a very large market for ’knock-off’ high end MC cartridges, compared to Taylor Made clubs ( as an example), I guess if the mark-up is there??

@mammothguy54 what a stellar example. Thanks for the insight.