I recently picked up 3 old Johnson and 1 old Evinrude racing engines and could use some help identifying them. I only took pictures of this Johnson tonight. The other Johnson motors look almost identicle to this one and they say PR55 on the flywheel. This motor doen't say anything on it. This is the only one with this type gearcase on it. They all have Vacturi carbs and a rotory valve except the Evinrude and it is a speeditwin. The lower unit says "107" on the lower unit and it also has a what appears to be a dragon above the number. Can anyone shed some light on this please. I know very little about the old Johnson and Evinrude motors. Thanks
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