Very interesting. First, is the Quad tank made of sheet aluminium? They are usually cast. The second tank is from a 1922-23 solid rudder Light Twin (ruddertwin). What is interesting is that it has remnants of a 1925 ELTO decal.1922-24 ELTO decals only had the word ELTO and not the framed border.
Thanks for your input, Wayne. The first tank is cast. Hard to tell from the photos.
The second tank came in a pile of parts with three hollow rudders. I’ll have to take more photos and do a post of what I have (and learn what I’m missing.) Would there have been an ID plate somewhere on that tank?