MOS Wafers Rare 1970 Vintage Devices

[Vlasta]

HI

I have a number of MOS wafers I bought in the estate sale of a deceased engineer. These ALL have the iconic MOS logo and photos are shown below.

Sensible offers please.

I have:-

MOS Test 1 - 2” test Wafer marked MOS and Test 1 - I have 3 of these
MOS 2019 - a 2” wafer that looks like some kind of simple logic or gate array to me - I have 2 of these
MOS 2050J - a 2” wafer 256 bit RAM - I have 2 of these
MOS 2050G - a 2” wafer 256 bit RAM - I have 4 of these
MOS 2013A - a 2” wafer that looks like ROM - I have 1 of these

Test Wafer





2019 Wafer





2050J Wafer





2050G Wafer





2013A Wafer

[mister_rf]

Those are very nice wafers indeed. I would like to buy one or two, but I don’t have any clue about how much to offer for one piece.

[Vlasta]

Send me a PM with an offer.

[Vlasta]

Anybody for a piece of history before I put them on eBay?

[mister_rf]

I’ll take the one MOS 2050G - a 2” wafer 256 bit RAM - for $225, is that OK?

[Vlasta]