goldbrass, laqueured, engraving on the bell says "F. A. Heckel, K. S. Hofinstrumentenmacher Dresden", see above; it also has a patch somewhere and there must have been some dent work on the bell at some time, as you can see from the pictures, but you don't feel anything from that when playing; this is a particular instrument, since it has no garland and also a larger bell than the "standard" Heckel; Heckels without garland were favoured e.g. in Vienna and tend to be a bit more responsive; it has a very sweet sound that also really opens up when played at loud dynamics.

Heckel_Bb_2

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