Hi Joseph
The CGE G-88K appears to cross over to a an RCA Victor 98K. I don’t have a G-88K schematic to compare but it shows it as L11 & L12 part number 31264, this may open up other sources for the coil.
Thanks for the information! Readers, please expand your part search to include the RCA Victor 98K. Note: I failed to identify the part number in my original message and it is also 31264 as Brian mentions that it is in the RCA Victor.