Example: Selmer, Series 10S, #B0478 is a B Series made in 1980. Selmer (Paris) Clarinets Professional clarinets since 1885 The Series: is the letter in the serial number itself and not the model Series. It appears that it was purchased in the early 90's, given the dates on the literature that came with the instrument. My tech says the wood is better than the Selmer Signet Soloists that she works on but she can't identify the model either. As well I've tried to track it on other sites that carry Selmer model numbers but again, no success. I tried Selmer USA directly but they were of no help. I would love to no what the model is but other than a model number (1052), gold-plated keys and very nice grenadilla wood there is no way for me to determine the actual model name.
I acquired a Selmer USA clarinet a few years ago and have been playing it ever since. This topic is of particular interest to me because I'm in a similar situation.