The Ansco No. 3A Folding Buster Brown is an early 20th-century folding roll-film camera produced by Ansco in the United States. It belongs to the family of postcard-format folding cameras aimed at amateur photographers when introduced.

Sales data is extremely thin: a single UK auction hammer result from March 2022 saw an example sell for £12. On that limited evidence, today's value at saleroom level for a No. 3A Folding Buster Brown sits in the low double digits in GBP, and the price a collector pays at auction will hinge heavily on cosmetic condition and whether the bellows and shutter still function.