I got a Tamko 60w incandescent bulb, made in Korea in the 1980s. I could see it was made for sale in Canada, but I found it in one of the restores here! See here. Did you see my Canadian Powerlite 125w mercury "cuplight"? I got a couple other bidders competing for it, wondered if it was you lol.
I recently found a Tamko lamp just like yours,I have not posted it yet, but I have a couple other Tamko lamps ( 60W and 100W) here and here .Yeah I tried bidding too lol, but with the poor Canadian Dollar I didn't increase my bid.
Any idea how old? Pre-1994 (EPACT) I would think...