A reference number is a sentence in code: base model, bezel and material letters, dial configuration, production-era markers. Paste one and read it in plain language. The same normalisation runs under every CALIBRÉ price — one canonical identity per watch, however the seller wrote it.
Decoding follows each maker’s published conventions where they exist and observed catalogue structure where they don’t. Unrecognised parts are said to be unrecognised — never guessed.