Hi Dean
I've got the Carriage Trade issue
The dead wax readings are all etched in this is how mine reads S 1 R4267 D.3
Good Side reads S 2 R4268 D.3
Never had the other 1 but i'm sure the Pinches bros may know , i don't think myself there is any difference in recordings Toni O played the Carriage Demo out & it sounded the same as mine
Just noticed on You Tube Carriage Demo has published 1972 not on CT label
Hope this helps
atb Kev