Hasag 52 Sapo, i share with you my latest finding, before they removed the chrome and apparently it will be easier to polish the surface and enjoy the color of the bronze, the lamp only has the old Hasag logo, the number 52 on the plate and a daring sheet of metal with an embossed frog and is glued or welded to the fountain. There is nothing written below the font and it does not have a Hasag logo in the highest part of the hat as I have seen in other Hasag 52s. I have the impression that it is a very old model, maybe from the early 20's, I want to know more about it. I want to disassemble and change the ruined parts, I do not know how to remove the valve from the bottom of the pump, and I do not know the dimensions of the rubber and seals of the other sections of the lantern, my experience is basically with Petromax lanterns. I would like to get the original knob, apparently it was black and with rounded edges, as it has one of ILSA lanterns that were made in Uruguay. The mystery of the SAPO was solved here. I have just got this lamp in Uruguay, the eastern country of South America, after investigating the origin of the frog stuck in the fountain, I discovered that it was a distributor in Montevideo, the capital of this country, which was dedicated to importing lamps and other related items with construction and agricultural machine parts called "SAPO", Variela Radio & Cia, Cerro Largo, Montevideo. (Source Neil Mc Ray). I would like to know more about this flashlight and I also appreciate your advice to bring it to life again. Cesar.