Infrared Philips KL7500 of appr 1963.

Made from cast aluminium it weighs more than one kilo and a half. For the first time pressed glass with an integrated Fresnel lens is applied. The lamp is fixed with a clamping ring that fits in a groove in the front of the armature. The trademark Philips is integrated in the grip, a foil with the Philips logo is adhered on top of armature. There is no further type indication on the armature. (quote from www.infraphil.info)