Frequently used terms

Overall:

6 Volt

Means that it is an older motorcycle with breaker points and 6 volt electrical system. (+/- 1970's and older)

12 Volt

Means that it is a newer type with electronical ignition and a 12 volt electrical system (+/- 1980's and younger)

CDI

Electronic ignition, this almost always comes with an 12 volt system.

NOS

New Old Stock.
New but from an older stock. These parts are often hard to get and this makes them overall more expensive.

OT

Old type

NT

New type

Honda C50:

Old type (OT)

C50 (or C70, C90) with the tank mounted on the frame with four bolts, contactpoints ignition and a 6 volt electrical system.

New type (NT)

C50 (or C70, C90) with the tank mounted in the frame, CDI ignition and a 12 volt electrical system.

Honda Dax:

Old type (OT)

Original Honda Dax (no replica) with breaker points ignition and a 6 volt electrical system.

New type (NT)

Original Honda Dax (AB23) who looks the most like the replica's and has a CDI ignition and a 12 volt electrical system.