Pre war speedometer question

[richtrix]

Hello....I've got a circa 1930 Elgin motorbike. Could someone let me know what types of speedos would be correct for this bike.....Pics would be great......Thanks

 

[prewarfan]

I am not real up on the pre 35 stuff, but I don't think speedo's started being used until after 1935?

 

[richtrix]

I was thinking that myself as I've never seen one advertized that early.....Thx