This bottle probably could have contained developer. This bottle is Aqua color with an applied top. It stands about 7 3/8 tall and is in excellent condition.
It does have some interior deposit which may have been from original contents as shown in the pics. In 30 years of collecting these Anthony bottles this is the only one I have seen of this variation. The letters in this mold are cut short on this bottle. The Y in Broadway is missing and the Y in Anthony is barely fitting. This makes me think they might have had a taller variant of this mold.
This bottle has an Iron Pontil and dates in the 1850's. Anthony / 308 Broadway New York pontil antique photography chemical bottle" is in sale since Friday, February 17, 2017. This item is in the category "Collectibles\Bottles & Insulators\Bottles\Antique (Pre-1900)\Other Antique Bottles". The seller is "coolspecs4u" and is located in Clayton, North Carolina.This item can be shipped to United States, to Canada, to United Kingdom, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, to Australia, GR, PT, CY, SI, to Japan, to China, SE, KR, ID, to Taiwan, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Germany, to Austria, RU, IL, to Mexico, to New Zealand, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM.