I have one of these. Never uses with original batts. Radio and nice case are 100%. No earbud phones. I see mainly the 436 model mentioned but not this model. Can anyone shed light on thsi for me????

I thought that this topic came up last month? on its twin brother, but here is all the info that I have on that particular set. The first URL is the technical data followed by a small thumbnail photo of the unit. They propose circa 65 as its vintage , but I thought5 that your model might have been a tad older of a model. I always thought the other model was a bit prettier/ flashier. Both of the sets, being what I categorized as small watch fob radios. I even was asked to repair one long ago, but it merely turned out to have battery terminal contact "canceritis" as its sole problem from defunct-aged-decomposed batteries being in it.

Standard Ruby SR-H438 Technical Data:
http://www.radiomuseum.org/r/standard_micronic_ruby_sr_h438sr_h.html

Standard Ruby SR-H438 thumbnail photo:
http://images.google.com/images?q=tbn:5RKGcT7lcr0sGM:utenti.lycos.it/aire/235.jpg

73's de Edd