I thought these would be the ones you were talking about!I was looking at these for awhile wondering the same thing as you.Although Landar were a pretty low end brand,like alot of people in the 80s,they probably had some stuff made for them.Im sure i saw some german writing on the box somewhere,which could indicate its a rebranded product,and it could be quality.Its certainly unusual to find a shite hollow opc,when that was the sort of technology youd expect from the likes of TIOGA!I think these were up for more money before,it stil doesnt look like they'll sell at that price.just looked again,yes it says produced by leinmex,whoever they are??could be german,could be taiwanese!!Id say they were a tad pricey,but nos 80's opc's are quite difficult to find!