CA3140E substitute?

[Taylor]

I am building an old circuit - Penfold's "Light Metal Effect" - an intelligent ring modulator. It requires 3 CA3140E chips, but I can't find these anywhere. What could I substitute?

[anchovie]

5 for $6 including shipping here: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170286799963

[Taylor]

Ah, thanks. It hadn't occurred to me before now that ebay might be a good place to check. Found PT2399s cheap there, too.  What a nice discovery.