| Remarks | Smoke & Choo-Choo 
	both with and without headlight.  Charles Sommer values the locomotive 
	without headlight higher than the one with the headlight, based on his 
	belief that the locomotive without the headlight is rarer.  Collector 
	Dom San Giovanni has found that the locomotive without the headlight is more 
	frequently found than the locomotive with the headlight, leading to the 
	opposite conclusion.  Also, Dom has found unlighted 443's with 1956 
	date stamps in the boiler casting, which indicates that the unlighted 
	version was not confined to 1955 as indicated in the Sommer guide.
 At the time of the transition of the 
	entire American Flyer line from 3 digit to 5 digit numbering, there was also 
	another transition going on in Gilbert HO and that was the transition from 
	cast drivers with the familiar white sidewalls and steel rims to plastic 
	drivers with cast aluminum rims. This affected the 433, 443, and 446. In 
	theory, these should all have had the cast drivers with white sidewalls and 
	steel rims, but numerous examples have been found of 3 digit locomotives 
	with plastic drivers and aluminum rims. Given Gilbert's penchant for always 
	attempting to utilize old stock before producing new, this suggests that the 
	factory may have run out of old mechanisms before they ran out of shells. 
	These plastic/aluminum driver 3 digit locomotives may either be a variation 
	or the result of a hobbyist modification or repair depending on the date 
	stamped inside the shell. The shells were not date stamped until used so 
	shells with 1955 or 1956 dates are likely to be modifications or repairs, 
	rather than variations. Late 1957 dates, such as September and October 1957, 
	would indicate variations.
 
 Most plastic/aluminum driver 443's 
	have Pull-mor drive wheels.
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