Hi Ken,
I actually thought I had a #47 Antares 1.25" filter which I would have sold to you for the postage cost, but ALAS I can't find it. I managed to find 7 x 1.25" Antares Colour Filters and 11 x 2"(48mm) Hoya Filters, but not a #47 amongst them. Every other colour known to man, but no #47.
The problem is digital photography has changed colour filter needs dramatically, to the extent that Hoya don't make that many colour filters and they don't make any with 48mm threads to fit 2" astronomy accessories. They no longer make a #47 in any size.
A couple of possible options.
1) Call Lee Andrews at Andrews Comms. He used to sell a whole range of 1.25" GSO filters. GSO definitely make, or used to make a 1.25" #47.
2) If you want to go with 2" format,which is possbly a better option,
have a look at the curves on the Hoya FL-W filter . I think this looks reasonably close to what you are after. You won't be able to get it in 48mm, but you can get it in 49mm and then use a 49mm to 48mm step down ring, which should cost about $10.
Cheers
John B