The new 1993 organ at St. John the Baptist Roman Catholic Church, Pottsville, PA is housed in a case that was part of the original instrument built for St. John's Church in 1873 by the Boston, Massachusetts firm of Hook and Hastings.
In 1953, the Hook and Hastings instrument was removed and a smaller instrument, utilizing some of the pipes from the original instrument, was constructed inside the old organ case. When it became necessary to make extensive repairs to the 1953 instrument, it was decided to replace the organ with a more durable, versatile instrument.
The 1993 organ was constructed as the original organ had been, with mechanical action, in order to insure that it would serve, with very minimal maintenance, for many hundreds of years. The new organ is exactly the same size as the original Hook and Hastings instrument. It has 1832 pipes, 684 of which are from the original organ. The large pipes in the casework, silent since 1953, now speak.
Save for the 684 Hook pipes and the magnificent casework, the organ is entirely new. The new console was brought forward to allow better communication between organist, director and choir. The stop knobs very closely resemble the original. May this instrument sing the praises of the Lord for many years to come.

This describes a rebuild of an existing organ.

Identified by Patrick McMullen, who has heard or played the organ.