Beautiful and rare pink midi vintage Versace dress

My most special dress, found in a vintage store in Camden. This dress is incredibly rare - I can’t find anything like it on the internet or elsewhere.

Beautiful thick material with a beaded floral band under the boobs, and a cute double strap. Zips at the back. Dress is in perfect condition.

Very difficult to value true retail price - this dress was made in 1973 according to label and I do not know original price! Any advice on this welcome.