I would imagine all Ju 52s were painted 70/71/65 as intended for land based. The floats or skis being a conversion. If they built them on purpose for floats they probably painted them with 72/73/65 scheme ?
Well the cockpit and cargo area is completed. Ready to close up the fuselage. I fumbled on the wings. I neglected to drill out the location holes for the floats in my haste to put the wings together. I ended up hot wiring a Christmas LED to a 1.5 volt battery and fishing it into the wing until the holes shone through. Better than trying to split the wing apart !!