The only rider I can find who ran the number 11 on an RC45 was Phil McCallen in 1994 in the BSB. There is a lot of information here, https://m.f1network.net/main/s180/sitenav/p15.php Andy
The 750 was a limited production run in 1994/95 to homologate the bike for WSBK and available to buy in the UK from Honda, IIRC. Andy
Mines a 400 - I expect you all realised - but apologies if I misled. I’m having a garage / shed clean up. I’ve sold a bike already, have 2/3 of a FS1 engine to advertise, but also considering selling the nc30