Jim,
As was posted above, the chrome 3100 side emblems are readily available from restoration parts vendors (same part for 1953-1954; the 1955.5 side emblems are different).
The front hood "emblem" is often seen on eBay (1-3 a week) - some have small dings but be sure to ask if the 4 mounting posts are good. They are stainless steel and can be polished (and decals are available).
The chrome accessory hood ornament is an eagle-like bird with downswept wings - reproduction and used hood birds are also seen on eBay every so often (the reproduction ones are expensive - $150+, as I recall). The reproduction hood birds are sold by some vendors (aound $250 when I last looked). Make sure it comes with the mounting base.
Tim
