There are two small square Griswold skillets, a toy one with the handle attached to a flat side, and a "square egg" (sometimes seen marked "squar egg") skillet with the handle at a corner. The latter were made with two different pattern numbers, although they appear for the most part identical otherwise. The p/n 53 (according to the BB) is from the 1960s; the p/n 129 would also be somewhere in the vicinity of the 1940s-60s by its "late" handle design and small block logo. The BB values the toy at $150-200, the square egg at $35-50. Those might both be a little high, IMO.