I bought a bottle of Weller 12 that had a crossed wheat emblem on the glass stating "since 1849". I have since gone to various stores, including the new Specs and I haven't seen this emblem anywhere else.
Was this a one-off bottle or part of a celebratory release or is this common? I provided pictures below, including the number on the bottle. It's actually 'etched' in the glass versus printed.