early IC ident: Sperry 1M4

(Speaking of early ICs...) Slim chance, but I'll ask: I have a small plastic box of (what we now call) integrated circuits. Inside are twenty-five (unused,NOS) 10-pin flat-pak ICs, but with pin 6 absent. (Very cute, there is a cardboard holder with each IC nestled in it's own cutout in the cardboard.) The ICs are stamped: SSI <-- logo (Sperry Semiconductor Incorporated?) 1M4 <-- type 6546 <-- date code On the box is a label with: MICRONETS from SPERRY SEMICONDUCTOR (SPERRY RAND CORPORATION) TYPE: 1M4 S.O.#: 20613 <-- Shipping Order # ? CUST.P.O.#: 17762 <-- Purchase Order # ? I like the term MicroNets, from a time when it was not universally agreed upon to call them ICs. Obviously I'm curious as to what they are - can't be too complex with 10 pins and given the period - but before I sit down with an ohmmeter and power supply figured I might as well ask if anybody might know. (Sperry made a lot of stuff, so it's too much to presume they were used in UNIVACs, but when did UNIVACs move to ICs?)