From a reader:
I googled “shmundo” and found references basically only to the G-file.
Did you invent this word? It is so clear that it means lots of money. Not like in a bank, but sort of a big pile of cash.
For the record I don’t believe I coined it, but I’ve been using it for so long I have no idea where I heard it. One small insight into my upbringing: such neologisms were not in short supply in the Goldberg household.