Holy smokes, you struck it rich. I'd keep them in a box with a dense foam spacer between each. Keep them sharp and strike with a rawhide or wood mallet only. These are what are called your 'good chisels' and are never to be loaned. You only loan your sh!t chisels. Mazeltov.

What do you get back when you let an electrician borrow your chisel? A fork.