Official part 4719 : part variation problem ?

[Chris Böhnke]

Are they identical otherwise?

I agree the current one does not exist.

However I am beginning to believe there are more versions:

• Original Version is 4719(a), which was always found in Assembly 73537 (1985-2007?). Did the first batches of Cafe Corner still come with this? If not this was likely discontinued around 2004. The wheels for this have no known number, but LDD lists them as "64248 - TYRE AND WHEEL, VIRTUEL". Most common in Red and Black, but also available in White, Yellow and Dark Pink (Team Telekom)
  
• The first bicycles which shipped disassembled first appeared in City in 2009, but might have been in Educational Sets a bit earlier. Brickset lists this as 4719 as well, but LDD has them as 33485. Colours Red, Green, White, Medium Azur and Bright Light Orange. his might have already had the revised studs. Any proof of Green bicycles with the old stud types out there (colour should be exclusive to the type)? The new (?) Wheels are listed as 28578, but the number 92851 exists as well. Note that these are dual-molded unlike the older ones with removable tires.
  
• The current version seems to be 65574, which came in 8 colours thus far: Red, Yellow, Black, Magenta, Medium Azur, Dark Azur, Bright Green, Br. Light Yellow. It still seems to use the same wheels 28578, however there might have been a minor change a couple years ago as Element 6503209. Also note that according to Brickset/Lego.com, the 65574 did not appear in regular Sets (= not Educational) before 2020.
  

Since the assembly will likely need a new library entry as well, I think we should use 73537 for the old one here too.