Discovered by Annette Schwarz (Germany, before 2013).

Found Rose, Bourbon.  

Crimson - scarlet, ages to purple .  Strong, citrus, sweet fragrance.  Very full (41+ petals) bloom form.  Once-blooming spring or summer.  

Armed with thorns / prickles, suckers on its own roots.  Dark green foliage.  5 to 7 leaflets.  

Height: 4'11" to 6'7" (150 to 200cm).  

Source: http://roses.shoutwiki.com/wiki/Fundrose_%22Welzow%22
Found in Welzow near Cottbus, Germany, in abandoned houses of a townhouse Settlement from the 1920s. Possibly 'Great Western'.