{Collins} Collins Part Needed - Normal/Receive/Transmit Switch for 312B4

I need the Normal/Receive/Transmit switch for a 312B4 I just picked up.  Switch is OK, but lever is broken off near front panel.  Any help in locating a replacement would be appreciated.
Dave K5WNV
Sponsored by the Collins Collectors Association http://www.collinsradio.org
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