This issue is a variant of Wonder Woman (DC, 1942 series) #273 [Direct].
On-sale date from copyright registration. Len's Line-Up in November 1980 issues has on-sale date of August 11.
Possible cameo of Bella Abzug in the bottom right corner of page 12. Last issue, Diana Prince had her hair down before changing to Wonder Woman, but when she reappears as Diana Prince here, moments later, she has her hair in a bun. Diana Prince and Etta Candy decide to share an apartment. Wonder Woman and Steve have their first date; she wears a blue cape over her costume.