I recently thrifted the 1970 3M small boxed edition of High Bid.
I am missing the blue die and the 12 special value cards.
I am not trying to "flip" the game for profit, I legitimately want to play it and keep it in my collection.
Be sure to add a note in the "Want Parts" section of the High-Bid page, and see this item in the "Parts" geeklist as well:
Item for Geeklist "2015-2016-2017 Spare Parts Resource List"
You can also try eBay, spare parts for games are quite often listed, but they can be a bit pricey since the sellers have to cover fees as well as packing and shipping costs.