Context: Numerous modern mandolin makers build instruments that largely replicate the Gibson F-5 Artist models built in the early 1920s under the supervision of Gibson acoustician Lloyd Loar. Original Loar-signed instruments are sought after and extremely valuable. Other makers from the Loar period and earlier include Lyon and Healy, Vega and Larson Brothers. Some notable modern American carved mandolin manufacturers include, in addition to Kay, Gibson, Weber, Monteleone and Collings. Mandolins from other countries include The Loar (China), Santa, Rosa (China), Michael Kelly (Korea), Eastman (China), Kentucky (China), Heiden (Canada), Gilchrist (Australia) and Morgan Monroe (China).

Question: What style of Gisbon Mandolin was largely replicated?
Answer: Gibson F-5

Question: When was the Gibson F-5 largely replicated?
Answer: early 1920s

Question: Who supervised the Gibson F-5's replication? 
Answer: Gibson acoustician Lloyd Loar

Question: Who are the other makers from the Loar period? 
Answer: Lyon and Healy, Vega and Larson Brothers

Question: Who were notable modern American mandolin manufacturers? 
Answer: Kay, Gibson, Weber, Monteleone and Collings.

Question: What style of Gisbon Mandolin was never replicated?
Answer: Unanswerable

Question: When was the Gibson F-5 never replicated?
Answer: Unanswerable

Question:  Who rejected the Gibson F-5's replication?
Answer: Unanswerable

Question:  Who are the other businessmen from the Loar period?
Answer: Unanswerable

Question:  Who were notable modern African mandolin manufacturers?
Answer: Unanswerable