Book  (2020)  Page(s) 39.  
 
Sheenagh Harris, Roses in South Africa
Another amateur was Signor Moro, who was a prisoner of war in S.A. and he bred a rose named 'Pretoria' which won a gold medal in Rome in 1953. A mutation of this variety was found at Floradale Nursery in East London, S A, one of the first striped hybrid teas and it became well known as Anvil Sparks and as 'Ambossfunken' (a translation of Anvil Sparks) by Kordes. 

Book  (2000)  Page(s) 77.  Includes photo(s).
 
‘Ambossfunken’/’Anvil Sparks’ = Hybride de Thé – tons rouges, remontant. …la belle éclôt sur une plante fragile… Bien droite sur sa tige mince et ferme, elle tient en vase si on la coupe à peine éclose… Found by Meyer, Afrique du Sud, 1961. Sport de ‘Signora Piero Puricelli’.

Book  (Dec 1998)  Page(s) 77.  
 
Ambossfunken ('Anvil Sparks') Meyer (South Africa) 1961... bizarrely flecked and stippled petals of yellow, apricot, carmine and orange-red... This rose is best in warm weather; it was discovered by Mr. E. Meyer in his garden in East London, South Africa, from where it found its way to the Kordes nursery, who introduced it as 'a rose for the connoisseur'.

Book  (Sep 1993)  Page(s) 55.  Includes photo(s).
 
Anvil Aprks ('Ambossfunken') Large-flowered. a sport of 'Signora Piero Puricelli' which occurred in the garden of a Herr Meyer in Germany. It was introduced by Kordes in 1961... bizarrely striped in fiery shades of orange-red, carmine, apricot and yellow...

Book  (Apr 1993)  Page(s) 13.  
 
Ambossfunken Hybrid Tea, coral-red streaked golden yellow, 1961, ('Anvil Sparks'); Meyer. Description.

Website/Catalog  (1973)  Page(s) 10.  Includes photo(s).
 
Anvil Sparks Rosso corallo vivamente striato e punteggiato di giallo oro. Profumatissima.

Website/Catalog  (1966)  Page(s) 18-19 (photo).  Includes photo(s).
 
ANVIL SPARK'S - (Meyer 1960) M.D. Var MEYpo 00276.
Point n'est besoin d'explication autre que celle de son nom : « Etincelles d'Enclume .» Très grosses fleurs aux nombreux pétales rouge corail marqués d'une flamme jaune d'or. H. 0,50/0,70 m

Book  (1965)  
 
p82. Dr. A. S. Thomas, New Roses in Victoria.
Anvil Sparks HT. (Meyer, 1963) A sport of 'Signora Piero Puricelli', and it resembles the parent in all but colour. A spectacular rose - the petals are mostly deep chrome yellow, but they are heavily striped and splashed with rich scarlet. Seldom up to show standard, and only moderately fragrant.

p171.  Hazlewood Nurseries Pty. Ltd. advertisement.  Novelty Roses 1965
Anvil Sparks (HT) Orange red with yellow stripes

Magazine  (Feb 1964)  Page(s) 1. trimester, p. 23.  
 
Liste des Variétés Nouvelles éditêes en France et enregistrées par le Syndicat National des Producteurs de Nouveautés au 31 Décembre 1963...
Rosa HT MEYpo 00276 F US, 1963, Anvil Spark, Lieu et numéro d'enregistrement en France Paris 504 026, N^o d'enregisterement International - , Obtenteur Meyer, Editeur Vilmorin

Book  (1964)  Page(s) 12.  
 
Roy and Heather Rumsey, NSW.
New Roses.  Anvil Sparks HT. (E. Meyer) A sport said to be from 'Signora P. Puricelli'. It was very attractive in the spring but degenerated in the autumn. The colour is most striking, being rich yellow striped coppery red. All blooms are striped and all petals in the bloom have the two colours striped down them. Most probably will suit the drier areas, but a word of caution is given to those coastal growers on the Eastern coast of this continent.