Does anybody know if there is a reason why some innova discs will have the disc abbreviations at the top of the nipple and the weight below it. What is the standard protocol for marking the disc? (Abbreviations at the top or bottom?)
I also would like to know what abbreviation came first for the ORC. I have seen O, OR and ORC. I saw one pfn Orc marked *orc with patent # and there was another pfn Orc marked *o without patent #.
Whats more rare?
I also would like to know what abbreviation came first for the ORC. I have seen O, OR and ORC. I saw one pfn Orc marked *orc with patent # and there was another pfn Orc marked *o without patent #.
Whats more rare?