VINTAGE FLASHLIGHTS LOT OF 4 DYNAMOS DACO-LITE & 3 UNBRANDED CIRCA 1960-90S

Description

The opaque yellow dynamo is likely the oldest.  It does have a hold that looks like it could have housed a spare bulb as some point but it is empty now.
The clear dynamo let's you watch all the moving parts and looks brand new.  It does use an incandescent, however so it can't be too up to date.  It does have a spare bulb in a separate compartment.
The yellow and black dynamo does not appear to be as robust.  It works ok but occasionally has a skipping sound.
The gray semi-transparent dynamo is much newer as it has incorporated LED technologyt.  Due to the low enery drain, there appears to be a small residual charge that remains to use a a low level light, such as a key light, that can be used without pumping.