I do the occasional hardware design. I just started a new project and I can't find the parts I need new in stock at distributors. However, I have unused stock,

I do the occasional hardware design. I just started a new project and I can't find the parts I need new in stock at distributors. However, I have unused stock, still in antistatic packaging with 1990's vintage date codes. Never thought I'd ever use another DIP part again! Customer doesn't care: they just want their boards delivered.