Oil tank badge watermark location

[Temple]

I have a 48 and a 49 Panhead that do not have the oil tank watermark. Were they on all the bikes?
Any tips on where to go for "badge watermark how-to" and location for either one?

I have searched but I keep ending up in some rabbit hole. Thanks in advance

[exeric]

The patent decals were only applied on the left side of the oil tank. Look at the factory pictures in Bruce Palmer's books to see the approximate placement. I suspect the decals were applied by 'eyeball', and experience. I suspect there may have been precise dimensions on factory blueprints, but I would be surprised if that was adhered to in production, or if a fixture was used to position the decal.

[Temple]

The patent decals were only applied on the left side of the oil tank. Look at the factory pictures in Bruce Palmer's books to see the approximate placement. I suspect the decals were applied by 'eyeball', and experience. I suspect there may have been precise dimensions on factory blueprints, but I would be surprised if that was adhered to in production, or if a fixture was used to position the decal.

Thank you.