OFWG4952 SAW filter in a weird brown 5 pin sil plastic package by Siemens.
ATV full bandpass with sound carrier - upgrade to the earlier OFW369 version, poular item within the amateur television broadcast community.
we think this is 45.75 Mhz region but yet to source datasheet.
Status: NOS (New Old Stock) in original unopened tubes. 2017 ebay prices: 17 euro , $15 our price £5