The Fraser Valley Heritage Railway Society is looking for the outer part of what we expect is a standard St. Louis Car Co. brass vent cover. We have the inner circle part that would cover the vent holes and the wing screw and nut.
please see attachment. Willing to pay, trade and pay shipping costs if you have a spare and wish to part with it
For more information contact me below

TIA
Robert Ashton
FVHRS
http://www.fvhrs.com
steveston@hotmail.com