Vintage Keystone Electronics Corporation board, Catalog No. 1741EP, still has Keystone label on it.

This was in a collection of phenolic perfboard, it may or may NOT be phenolic.

Board measures 8.5 x 2.45 inches, 0.095 inches thick.  May have light surface scratches from storage and handling.

32 by 9 hole pattern, hole diameter approximately 0.09 inches, hole spacing is 0.265 inches.

The seller makes no representation of any item(s) sold to be fit for a particular purpose and assumes no liability for its use or misuse. It is assumed that the unit(s) will be installed and operated by qualified personnel. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the item(s).