OFWG4952 SAW filter in a weird brown by Siemens. Package: 5-SIL "brick" 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 RoHS compliant: no