Lionel 451w 63-11 Bulb; where can I find these things?

[tds]

Hello, I'm a new poster looking for a specific item I've searched everywhere for this Lionel lamp post bulb from the prewar days that literally looks like a lamp post shade. It was used on the #52, #53 and #63 lamp posts as well as the original Lionel City Station. They pop up every once and a while but not too often. Wondering if anyone knows where to find these things. 

Thanks

[David1005]

Jeff Kane, The Train Tender, 7607 Gregg Road, Bloomfield, NY, 14469, has them in his prewar list.  There are probably reproductions.  Original GE lamps will be hard to find and would be very expensive.

[ADCX Rob]

[cwburfle]

Reproduction 451 bulbs have been available for many years.

IMHO, a fair price for an original, new old stock 451 bulb, in it's box would be $25 each.